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WordReference Random House Learner's Dictionary of American English © 2024hel•met /ˈhɛlmɪt/USA pronunciation n. [countable]- a usually strong and hard covering worn on the head for protection.
hel•met•ed, adj. WordReference Random House Unabridged Dictionary of American English © 2024hel•met (hel′mit),USA pronunciation n. - any of various forms of protective head covering worn by soldiers, firefighters, divers, cyclists, etc.
- Heraldrymedieval armor for the head.
- Sport(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.
- Middle French healmet, helmet, diminutive of helme helm2
- late Middle English 1400–50
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