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  1. an open, conical helmet with a nose guard, commonly used in the medieval period.
  2. any helmet-shaped head covering.
  3. Zoology. a process or formation on the head, resembling a helmet.

Origin of casque

1570–80; < Middle French < Spanish casco helmet, head, earthen pot; akin to cascara
Related formscasqued [kaskt] /kæskt/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for casque

Historical Examples

  • Tymbre is the general word used for the casque or helm by the French.

    Notes and Queries, Number 218, December 31, 1853


  • Its visor was up, and what I saw within the casque is stamped for ever on my memory.

    Scottish Ghost Stories

    Elliott O'Donnell

  • In this species the casque or excrescence on the upper mandible is very slight.

  • It represented the Cardinal-Generalissimo wearing a casque surrounded by laurels.

    Cinq Mars, Complete

    Alfred de Vigny

  • The coif can treat better with the cowl than the casque can do.

    Anne of Geierstein

    Walter Scott

British Dictionary definitions for casque


  1. zoology a helmet or a helmet-like process or structure, as on the bill of most hornbills
Derived Formscasqued, adjective

Word Origin

C17: from French, from Spanish casco; see cask
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for casque


"armor for the head," 1570s, from French casque (see cask).

Online Etymology Dictionary, © 2010 Douglas Harper