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[hel-mit] /ˈhɛl mɪt/
any of various forms of protective head covering worn by soldiers, firefighters, divers, cyclists, etc.
medieval armor for the head.
(in fencing, singlestick, etc.) a protective device for the head and face consisting of reinforced wire mesh.
anything resembling a helmet in form or position.
Origin of helmet
late Middle English
1400-50; late Middle English < Middle French healmet, helmet, diminutive of helme helm2
Related forms
helmeted, adjective
helmetlike, adjective
unhelmeted, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for helmet
Contemporary Examples
Historical Examples
  • Pericles was usually represented with a helmet, to cover the deformity in his skull.

    Philothea Lydia Maria Child
  • A helmet fell from his hands on the floor with a ring of steel.

    Viviette William J. Locke
  • He threw the helmet with a clatter on to the table as if it had been the knave's canting head.

    Viviette William J. Locke
  • "I know not about that," said John, kicking his helmet up into the air and catching it in his hand.

    The White Company Arthur Conan Doyle
  • Even the helmet, that covered him with its invisibility, had vanished!

    The Gorgon's Head Nathaniel Hawthorne
British Dictionary definitions for helmet


a piece of protective or defensive armour for the head worn by soldiers, policemen, firemen, divers, etc
(biology) a part or structure resembling a helmet, esp the upper part of the calyx of certain flowers
Derived Forms
helmeted, adjective
Word Origin
C15: from Old French, diminutive of helme, of Germanic origin
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
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Word Origin and History for helmet

mid-15c., perhaps a diminutive of Old English helm "protection, covering; crown, helmet" (see helm (n.2)). But Barnhart says from Middle French helmet (Modern French heaume), diminutive of helme "helmet," from the same Germanic source as helm (n.2). "Middle English Dictionary" points to both without making a choice. "Old English helm never became an active term in the standard vocabulary of English." [Barnhart]

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for helmet



The foreskin of the penis or the end of the penis (glans penis) •Fr its shape: clipped helmet

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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