Standard Lemma guide

Roundhead

adj · noun · 9 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.

  • Australia: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: R AW1 N D HH EH2 D Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Having a dome-shaped head.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A supporter of parliament during the English Civil War (in the 17th century).

Definition source: English Wiktionary via Wiktextract

Usage: historical, informal

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Parliamentarian

Antonyms: Cavalier, Royalist

3

noun

Meaning 3

A roundhead screw, one with a domed head.

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

Alternative letter-case form of Roundhead (“parliament supporter in the English Civil War”)

Definition source: English Wiktionary via Wiktextract

Usage: alt-of, historical

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

A male whose penis is circumcised.

Definition source: English Wiktionary via Wiktextract

Usage: slang

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

A circular platform at the end of a pier or breakwater.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

Any of various agarics of the genus Stropharia.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

a supporter of parliament and Oliver Cromwell during the English Civil War

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: supporter, protagonist, champion, admirer, booster, friend

9

noun

Meaning 9

a brachycephalic person

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: person, individual, someone, somebody, mortal, soul

History

Etymology

From round + -head.

From round + head, from their short-cropped hairstyle.

Across languages

Translations

10 source translations are retained for this English entry.

  • Finnish: kupukantainen — of a screw: having a dome-shaped head
  • Finnish: keropää — English Civil War: nickname
  • Irish: Maolcheann — English Civil War: nickname
  • Italian: testa rotonda — English Civil War: nickname
  • Italian: teste rotonde — English Civil War: nickname
  • Marathi: राउंडहेड (rāuṇḍheḍ) — English Civil War: nickname
  • Portuguese: cabeça-redonda — English Civil War: nickname
  • Welsh: Pengryniad — English Civil War: nickname
  • Finnish: kupukantaruuvi — roundhead screw
  • Japanese: ナベ (nabe) — roundhead screw