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

Earlier this season, India was hit in the helmet against the Guardians. —Jaylon Thompson, Kansas City Star, 13 Apr. 2025

The festival will feature bicycle activities and helmet giveaways along with a fix-it clinic. —Linda McIntosh, San Diego Union-Tribune, 11 Apr. 2025

These lights vary in their placement on your bike and may even be worn on your helmet. —Bestreviews, Chicago Tribune, 10 Apr. 2025

Ahead of the 2024 season, the NCAA approved helmet communications for FBS games, meaning that coach-to-player communication was designated to one player on the field, noted by a green dot on the mid-line of the helmet. —Hunter Bailey, Charlotte Observer, 10 Apr. 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