helmet

noun

hel·​met ˈhel-mət 

1

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

2

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

3

: something resembling a helmet

helmeted

ˈhel-mə-təd 

adjective

helmetlike

ˈhel-mət-ˌlīk 

adjective

Examples of helmet in a Sentence

Recent Examples on the Web

Photos and surveillance footage captured the moment Israeli soldiers in helmets and night vision goggles boarded the flotilla. —Bonny Chu, FOXNews.com, 2 Oct. 2025

Take the logos off the helmets, and the Commodores would probably be the favorites on paper. —Manny Navarro, New York Times, 2 Oct. 2025

As Brown crashed hard onto the orange turf of the end zone, his helmet popped off, spinning several yards while Brown continued rolling with the ball clutched in his arms. —Shaun Goodwin, Idaho Statesman, 2 Oct. 2025

Come November 1, aisles will be stocked with tens of thousands of items including skis, snowboards, and helmets from top brands including Patagonia, Arc'teryx, Canada Goose, Moncler, and The North Face, that never made it to their winter destinations. —Meghan Overdeep, Southern Living, 2 Oct. 2025

Word History

Etymology

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

First Known Use

15th century, in the meaning defined at sense 1

Phrases Containing helmet

• crash helmet
• pith helmet

Kids Definition

helmet

noun

hel·​met ˈhel-mət 

1

: a covering or enclosing headpiece of armor

2

: any of various protective head coverings usually made of a hard material

helmetlike

-ˌlīk 

adjective