hair

Definition

The thin strands that grow on a person's head or body, or similar strands on animals.

Usage & Nuances

'Hair' as a mass noun refers to all hair collectively ('Her hair is long'). 'A hair' means a single strand. On the head, it's usually called 'hair'; on other body parts or animals, 'hair' or more specifically 'fur' (for animals). 'Hairs' is rare unless emphasizing individual strands.

Example Sentences