Standard Lemma guide

dross

noun · verb · 8 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.

  • Received-Pronunciation: /dɹɒs/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • General-American: /dɹɔs/
  • Canada, US, cot-caught-merger: /dɹɑs/
  • Australian, New-Zealand: /dɹɔs/
  • Australian, New-Zealand: /dɹɒs/
  • rhymes with -ɒs
  • rhymes with -ɔːs
  • CMU ARPABET: D R AO1 S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

Waste or impure matter.

Residue that forms as a scum on the surface of molten metal from oxidation.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: slag, scoria

Antonyms: none provided

2

noun

Meaning 2

Waste or impure matter.

The impurities in metal.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Waste or impure matter.

A waste product from working with metal.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: slag

Antonyms: none provided

4

noun

Meaning 4

Worthless or trivial matter.

Definition source: English Wiktionary via Wiktextract

Usage: figuratively, uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: junk, rubbish

Antonyms: none provided

5

noun

Meaning 5

Residual raw opium left in an opium pipe which can be recycled for further sale or use.

Definition source: English Wiktionary via Wiktextract

Usage: slang, uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

verb

Meaning 6

To remove dross from.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

worthless or dangerous material that should be removed

Definition source: Princeton WordNet 3.0

Examples

  • there were impurities in the water

Meaning relationships

Synonyms: impurity

Antonyms: none provided

Broader terms: waste, waste material, waste matter, waste product

8

noun

Meaning 8

the scum formed by oxidation at the surface of molten metals

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: slag, scoria

Antonyms: none provided

Broader terms: scum

Narrower terms: basic slag

History

Etymology

From Middle English drosse, dros, from Old English drōs, from Proto-Germanic *drōhs (“dregs, sediment”). Also compare Old English drōsna, drōsne (“a ground, sediment, lees, dregs, dirt, ear wax”), from Proto-Germanic *drōhsnǭ, *drōhsnō (“dregs, sediment”), derived from *drōhs. Alternatively, this may be from *dragjō + *-snō (“yeast, sediment”; compare *dragjō (“yeast”)), as if from *drēcg + -sn. Ultimately from Proto-Indo-European *dhrā́ks (“sediment, yeast”). Cognate with Scots dros, drose, drosse (“small particles, fragments, dross”), Middle Dutch droes (“dregs”), Dutch droesem (“dregs”), German Drusen (“lees, dregs”), Latin fracēs (“grounds or dregs of oil”). Related also to drast, dregs.

Across languages

Translations

68 source translations are retained for this English entry.

  • Bulgarian: отпадъци (otpadǎci) — Waste or impure matter
  • Czech: odpad — Waste or impure matter
  • Czech: škvár — Waste or impure matter
  • Czech: brak — Waste or impure matter
  • Czech: šmejd — Waste or impure matter
  • German: Müll — Waste or impure matter
  • German: Schrott — Waste or impure matter
  • Greek: περιττό (perittó) — Waste or impure matter
  • Persian: تفاله (tofâle) — Waste or impure matter
  • Persian: لوث (lows) — Waste or impure matter
  • Polish: nieczystości — Waste or impure matter
  • Polish: odpady — Waste or impure matter
  • Russian: отбро́сы (otbrósy) — Waste or impure matter
  • Serbo-Croatian: о̏тпа̄д — Waste or impure matter
  • Serbo-Croatian: о̀тпадак — Waste or impure matter
  • Serbo-Croatian: ȍtpād — Waste or impure matter
  • Serbo-Croatian: òtpadak — Waste or impure matter
  • Swedish: slagg — Waste or impure matter
  • Ottoman Turkish: بوق (bok) — Waste or impure matter
  • Bulgarian: шлака (šlaka) — Residue that forms on the surface of molten metal
  • Czech: struska — Residue that forms on the surface of molten metal
  • French: crasse — Residue that forms on the surface of molten metal
  • French: écume — Residue that forms on the surface of molten metal
  • French: scorie — Residue that forms on the surface of molten metal
  • Galician: escoura — Residue that forms on the surface of molten metal
  • German: Schlacke — Residue that forms on the surface of molten metal
  • German: Krätze — Residue that forms on the surface of molten metal
  • Ancient Greek: σκωρία (skōría) — Residue that forms on the surface of molten metal
  • Italian: scoria — Residue that forms on the surface of molten metal
  • Kazakh: қақ (qaq) — Residue that forms on the surface of molten metal
  • Kazakh: қабыршақ (qabyrşaq) — Residue that forms on the surface of molten metal
  • Latin: spodium — Residue that forms on the surface of molten metal
  • Polish: opiłki — Residue that forms on the surface of molten metal
  • Portuguese: escória — Residue that forms on the surface of molten metal
  • Romanian: zgură — Residue that forms on the surface of molten metal
  • Russian: ока́лина (okálina) — Residue that forms on the surface of molten metal
  • Russian: шлак (šlak) — Residue that forms on the surface of molten metal
  • Serbo-Croatian: troska — Residue that forms on the surface of molten metal
  • Serbo-Croatian: šljaka — Residue that forms on the surface of molten metal
  • Spanish: escoria — Residue that forms on the surface of molten metal
  • Swedish: slagg — Residue that forms on the surface of molten metal
  • Tagalog: taing-bakal — Residue that forms on the surface of molten metal
  • Ottoman Turkish: بوق (bok) — Residue that forms on the surface of molten metal
  • Bulgarian: примес (primes) — The impurities in metal
  • Polish: nieczystości — The impurities in metal
  • Russian: при́месь (prímesʹ) — The impurities in metal
  • Serbo-Croatian: при̑мјеса — The impurities in metal
  • Serbo-Croatian: нечисто̀ћа — The impurities in metal
  • Serbo-Croatian: prȋmjesa — The impurities in metal
  • Serbo-Croatian: nečistòća — The impurities in metal
  • Ottoman Turkish: بوق (bok) — The impurities in metal
  • Czech: struska — A waste product from working with metal
  • Czech: škvára — A waste product from working with metal
  • Galician: escoura — A waste product from working with metal
  • Latin: scoria — A waste product from working with metal
  • Polish: zgar — A waste product from working with metal
  • Romanian: zgură — A waste product from working with metal
  • Russian: шлак (šlak) — A waste product from working with metal
  • Serbo-Croatian: шља̏ка — A waste product from working with metal
  • Serbo-Croatian: šljȁka — A waste product from working with metal
  • Spanish: escoria — A waste product from working with metal
  • Swedish: slagg — A waste product from working with metal
  • Ottoman Turkish: بوق (bok) — A waste product from working with metal
  • German: Abschaum — Worthless or trivial matter
  • German: Schund — Worthless or trivial matter
  • Polish: odpad — Worthless or trivial matter
  • Serbo-Croatian: о̀тпадак — Worthless or trivial matter
  • Serbo-Croatian: òtpadak — Worthless or trivial matter