hairline
(noun, adjective)
adjective
1. very thin, as thin as a hair
- There was a hairline crack in the airplane's wing.
noun
1. a very thin line
Definition categories: communication, line
2. the natural margin formed by hair on the head
Definition categories: body, bound, boundary, bounds
Sentences with hairline as a noun:
- It's just a receding hairline -- it's not like you're going bald.