Standard Lemma guide

fluke

name · noun · verb · 16 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • UK: /fluːk/
  • UK: flo͞ok
  • US: /fluk/
  • US: flo͞ok
  • obsolete: /fljuːk/
  • obsolete: flyo͞ok
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -uːk
  • CMU ARPABET: F L UW1 K Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

name

Meaning 1

A surname.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A lucky or improbable occurrence that could probably never be repeated.

Definition source: English Wiktionary via Wiktextract

Examples

  • We've classified by a fluke; actually, the first goal was just a total fluke.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A summer flounder (Paralichthys dentatus)

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

A trematode; a parasitic flatworm of the class Trematoda, related to tapeworms (class Cestoda).

Definition source: English Wiktionary via Wiktextract

Examples

  • The man became infected with flukes after eating a meal of raw fish.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

Any of the triangular blades at the end of an anchor, designed to catch the ground.

Definition source: English Wiktionary via Wiktextract

Topics: nautical, transport

Examples

  • The fluke of the anchor was wedged between two outcroppings of rock and could not be dislodged.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

Either of the two lobes of a whale's or similar creature's tail.

Definition source: English Wiktionary via Wiktextract

Examples

  • The dolphin had an open wound on the left fluke of its tail where the propeller had injured it.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

A metal hook on the head of certain staff weapons (such as a bill), made in various forms depending on function, whether used for grappling or to penetrate armour when swung at an opponent.

Definition source: English Wiktionary via Wiktextract

Examples

  • The polearm had a wide, sharpened fluke attached to the central point.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

In general, a winglike formation on a central piece.

Definition source: English Wiktionary via Wiktextract

Examples

  • After casting the bronze statue, we filed down the flukes and spurs from the molding process.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

noun

Meaning 9

Waste cotton.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

10

verb

Meaning 10

To obtain a successful outcome by pure chance.

Definition source: English Wiktionary via Wiktextract

Examples

  • I fluked a pass in the multiple-choice exam.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

verb

Meaning 11

To fortuitously pot a ball in an unintended way.

Definition source: English Wiktionary via Wiktextract

Topics: ball-games, games, hobbies, lifestyle, snooker, sports

Examples

  • He fluked the other red into the middle pocket, despite the double kiss.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

12

noun

Meaning 12

parasitic flatworms having external suckers for attaching to a host

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: trematode, trematode worm

Antonyms: none provided

Broader terms: flatworm, platyhelminth

Narrower terms: liver fluke, Fasciola hepatica, Fasciolopsis buski, schistosome, blood fluke

13

noun

Meaning 13

either of the two lobes of the tail of a cetacean

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: tail

14

noun

Meaning 14

flat bladelike projection on the arm of an anchor

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: flue

Antonyms: none provided

Broader terms: projection

15

noun

Meaning 15

a barb on a harpoon or arrow

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: barb

16

noun

Meaning 16

a stroke of luck

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: good luck, good fortune

Antonyms: none provided

Broader terms: luck, fortune

Narrower terms: serendipity

History

Etymology

Variant of Flook.

Unknown, perhaps dialectal. It seems to have originally referred to a lucky shot at billiards. Possibly connected to sense 3, referring to whales' use of flukes to move rapidly. Possibly derived from German Glück (“luck, good fortune, happiness”).

From Old English flōc (“flatfish”), of Germanic origin, related to German flach (“flat”), Old Norse floke (“flatfish”), all ultimately from Proto-Germanic *flakaz.

Mid-16th century in the sense of “anchor blade”. Probably the same word as in etymology 2 above or else a related word for something flat (cf. Proto-Germanic *flakaz). A derivation from Middle Low German vlögel (“wing”), from Proto-Germanic *flugilaz, seems phonetically impossible. If anything, related vlōch, vlucht (“flight”, both also “wing”) or even *vlunke (modern Low German Flunk (“wing, pinion”)) are more plausible candidates. Note that the kind of whale's fin is called Fluke in contemporary German, but this is likely from English.

Across languages

Translations

95 source translations are retained for this English entry.

  • Bulgarian: щастлива случайност (štastliva slučajnost) — stroke of luck
  • Catalan: xamba — stroke of luck
  • Chinese Mandarin: 僥倖 /侥幸 (jiǎoxìng) — stroke of luck
  • Chinese Mandarin: 運氣 /运气 (yùnqi) — stroke of luck
  • Czech: šťastná náhoda — stroke of luck
  • Czech: klika — stroke of luck
  • Dutch: toevalstreffer — stroke of luck
  • Finnish: onnenpotku — stroke of luck
  • Finnish: onnenkantamoinen — stroke of luck
  • French: coup de chance — stroke of luck
  • French: coup de bol — stroke of luck
  • Galician: potra — stroke of luck
  • Galician: golpe de sorte — stroke of luck
  • German: Glücksfall — stroke of luck
  • German: glücklicher Zufall — stroke of luck
  • Hungarian: mázli — stroke of luck
  • Irish: taisme — stroke of luck
  • Italian: caso — stroke of luck
  • Italian: caso fortuito — stroke of luck
  • Italian: colpo di fortuna — stroke of luck
  • Japanese: まぐれ (magure) — stroke of luck
  • Japanese: 紛れ当たり (magureatari) — stroke of luck
  • Korean: 요행수 (yohaengsu) — stroke of luck
  • Korean: 뽀록 (pporok) — stroke of luck
  • Polish: fuks — stroke of luck
  • Polish: szczęśliwy traf — stroke of luck
  • Polish: fart — stroke of luck
  • Portuguese: golpe de sorte — stroke of luck
  • Portuguese: acaso da sorte — stroke of luck
  • Portuguese: fortuna inesperada — stroke of luck
  • Portuguese: acaso feliz — stroke of luck
  • Portuguese: cagada — stroke of luck
  • Romanian: pleașcă — stroke of luck
  • Romanian: noroc chior — stroke of luck
  • Russian: уда́ча (udáča) — stroke of luck
  • Russian: везе́ние (vezénije) — stroke of luck
  • Russian: счастли́вая случа́йность (sčastlívaja slučájnostʹ) — stroke of luck
  • Spanish: chiripa — stroke of luck
  • Spanish: churro — stroke of luck
  • Spanish: anomalía — stroke of luck
  • Spanish: champa — stroke of luck
  • Spanish: moñona — stroke of luck
  • Spanish: carambola — stroke of luck
  • Swedish: lyckträff — stroke of luck
  • Swedish: oförutsedd tur — stroke of luck
  • Tagalog: tsamba — stroke of luck
  • Dutch: staartvin — lobe of whale's tail
  • Esperanto: vosta naĝilo — lobe of whale's tail
  • Finnish: pyrstön haara — lobe of whale's tail
  • Finnish: valaan pyrstön haara — lobe of whale's tail
  • German: Fluke — lobe of whale's tail
  • Manx: arbyl — lobe of whale's tail
  • Māori: peke — lobe of whale's tail
  • Portuguese: lobo da cauda de baleia — lobe of whale's tail
  • Russian: хвостово́й плавни́к (xvostovój plavník) — lobe of whale's tail
  • Spanish: lóbulo — lobe of whale's tail
  • Swahili: mkia wa nyangumi — lobe of whale's tail
  • Swedish: fluke — lobe of whale's tail
  • Bulgarian: лапа (lapa) — anchor blade
  • Czech: kotevní list — anchor blade
  • Dutch: ankerblad — anchor blade
  • Dutch: ankerhand — anchor blade
  • Dutch: wem — anchor blade
  • Esperanto: ankra pinto — anchor blade
  • Finnish: ankkurinkoura — anchor blade
  • French: pelle — anchor blade
  • German: Flunke — anchor blade
  • Italian: gancio — anchor blade
  • Norman: patte — anchor blade
  • Polish: łapa (kotwicy) — anchor blade
  • Portuguese: pata de âncora — anchor blade
  • Russian: ла́па я́коря (lápa jákorja) — anchor blade
  • Spanish: uña — anchor blade
  • Spanish: pico de loro — anchor blade
  • Bulgarian: мети́л (metíl) — parasitic flatworm
  • Czech: motolice — parasitic flatworm
  • Dutch: zuigworm — parasitic flatworm
  • Finnish: maksamato — parasitic flatworm
  • Finnish: lampaan maksamato — parasitic flatworm
  • French: douve — parasitic flatworm
  • German: Saugwurm — parasitic flatworm
  • Hungarian: métely — parasitic flatworm
  • Irish: puchán — parasitic flatworm
  • Irish: treimeatóid — parasitic flatworm
  • Polish: przywra — parasitic flatworm
  • Russian: двуу́стка (dvuústka) — parasitic flatworm
  • Russian: соса́льщик (sosálʹščik) — parasitic flatworm
  • Russian: тремато́да (trematóda) — parasitic flatworm
  • Bulgarian: контра (kontra) — a metal hook on the head of certain staff weapons
  • Dutch: weerhaak — a metal hook on the head of certain staff weapons
  • Finnish: väkä — a metal hook on the head of certain staff weapons
  • Finnish: metallinen koukku keihään päässä — a metal hook on the head of certain staff weapons
  • Russian: зазу́брина (zazúbrina) — a metal hook on the head of certain staff weapons
  • Russian: крюк (krjuk) — a metal hook on the head of certain staff weapons
  • Spanish: muerte — a metal hook on the head of certain staff weapons