[ hel-mit ]
See synonyms for helmet on Thesaurus.com
  1. any of various forms of protective head covering worn by soldiers, firefighters, divers, cyclists, etc.

  2. medieval armor for the head.

  1. (in fencing, singlestick, etc.) a protective device for the head and face consisting of reinforced wire mesh.

  2. anything resembling a helmet in form or position.

Origin of helmet

1400–50; late Middle English <Middle French healmet, helmet, diminutive of helmehelm2

Other words from helmet

  • hel·met·ed, adjective
  • hel·met·like, adjective
  • un·hel·met·ed, adjective

Words Nearby helmet

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How to use helmet in a sentence

British Dictionary definitions for helmet


/ (ˈhɛlmɪt) /

  1. a piece of protective or defensive armour for the head worn by soldiers, policemen, firemen, divers, etc

  2. biology a part or structure resembling a helmet, esp the upper part of the calyx of certain flowers

Origin of helmet

C15: from Old French, diminutive of helme, of Germanic origin

Derived forms of helmet

  • helmeted, adjective

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