Word.ws English Dictionary

roundhead

roundhead adjective: having a dome-shaped head. Also the alternative letter-case form of Roundhead.

Adjective

roundhead (not comparable)

  1. Having a dome-shaped head.
    • The roundhead screw and its fraternal twins, the button head and pan head screws, have a head that is flat on the bottom and hemispherical on top.2000, Reed Karen, The Complete Idiot's Guide to Woodworking, →ISBN, page 182
    • You can use flat-head screws and plug the holes, or you can use roundhead blue screws and let the heads project.2010, H. H. Windsor, Mission Furniture: How to Make It, →ISBN, page 58

Noun (1)

roundhead (plural roundheads)

  1. A roundhead screw, one with a domed head.
  2. (slang) A male whose penis is circumcised.
    • The roundheads in the school showers easily equalled the cavaliers.1992, John Hoyland, Fathers and Sons, page 94
    • Since penile preference is so tied up with personal aesthetics and body image, it seems both logical and fair to leave the choice of cavalier or roundhead to the owner of the organ, thus avoiding the sort of life-long pain expressed in a comment like this:[…]2008, “Objections of a sentimental character: The subjective dimension of foreskin loss”, in Matatu, number 37, →OCLC, page 158
  3. A circular platform at the end of a pier or breakwater.
    • The top of the caisson will be at the same level as the bag-work foundation of the pier, and a roundhead, composed of 45-ton granite faced concrete blocks, will be built on it.1899, Junior Institution of Engineers (London, England), Journal and Record of Transactions: 1899-1900 - Volume 10, page 251
    • The smallness of the damage done at Purfleet is remarkable, when it is remembered that the impact of a large steamship is sufficient to cut deeply into solid masonry piers, and that only in 1907 the effect of a collision against the souther breakwater of the Admiralty Harbour, Dover, was to sever...1921, L.G. Mouchel & Partners, Mouchel-Hennebique Ferro-concrete
  4. Any of various agarics of the genus Stropharia.

Noun (2) capitalized: Roundhead

Roundhead (plural Roundheads)

  1. (historical, informal) A supporter of parliament during the English Civil War (in the 17th century).
    Synonyms:
    Parliamentarian
    Antonyms:
    Cavalier, Royalist

Also used as

roundhead is also the alternative letter-case form of Roundhead.

Synonyms of roundhead

Antonyms

Forms of roundhead

pluralroundheads
pluralRoundheads

Origin of roundhead

From round + -head.

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

Questions about roundhead

What does roundhead mean?
Roundhead means having a dome-shaped head.
What part of speech is roundhead?
Roundhead can be an adjective or a noun.

Words near roundhead in the dictionary

  1. roundfish
  2. roundfishes
  3. roundhand
  4. roundhands
  5. Roundhay
  6. roundhead
  7. roundheaded
  8. roundheadedness
  9. roundheads
  10. roundheel
  11. roundheeled

Source and license

Adapted from Wiktionary: roundhead (page history and authors); Roundhead (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: En-au-roundhead.ogg.

Cite this entry: “roundhead.” Word.ws, https://word.ws/roundhead. Based on Wiktionary, CC BY-SA 4.0.