helmet

play
noun hel·met \ˈhel-mət\

Definition of helmet

  1. 1 :  a covering or enclosing headpiece of ancient or medieval armor — see armor illustration

  2. 2 :  any of various protective head coverings usually made of a hard material to resist impact

  3. 3 :  something resembling a helmet

helmeted

play \ˈhel-mə-təd\ adjective

helmetlike

play \ˈhel-mət-ˌlīk\ adjective

Recent Examples of helmet from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'helmet'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of helmet

Middle English, from Middle French, diminutive of helme helmet, of Germanic origin; akin to Old English helm helmet, Old High German helan to conceal — more at hell


HELMET Defined for English Language Learners

helmet

play
noun

Definition of helmet for English Language Learners

  • : a hard hat that is worn to protect your head


HELMET Defined for Kids

helmet

play
noun hel·met \ˈhel-mət\

Definition of helmet for Students

  1. :  a protective covering for the head



Seen and Heard

What made you want to look up helmet? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

marked by lack of plan or order

Get Word of the Day daily email!

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!