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

The first day used to be so chaotic and humorous in the old days, with players not knowing how to put on helmets let alone figure out shoulder pads and struggling in line drills. — Eric Sondheimer, Los Angeles Times, 26 July 2026

Both riders, who were not wearing helmets, were thrown off their motorcycles, police shared. — Eleanor Nash, Kansas City Star, 26 July 2026

Orange County commissioners may mandate helmets for riders 16 and younger and require riders to slow down when approaching pedestrians. — Steven Walker, The Orlando Sentinel, 26 July 2026

However, fans can finally get a look at what Magneto will look like in his X-Men uniform and helmet in the film with Sideshow Collectibles’ release on Sunday of official photos of the 12-inch scale figure of the character. — Tim Lammers, Forbes.com, 26 July 2026

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