hair

noun

1. a covering for the body (or parts of it) consisting of a dense growth of threadlike structures (as on the human head); helps to prevent heat loss"he combed his hair"
2. a very small distance or space"they escaped by a hair's breadth"
3. filamentous hairlike growth on a plant"peach fuzz"
4. any of the cylindrical filaments characteristically growing from the epidermis of a mammal"there is a hair in my soup"
5. cloth woven from horsehair or camelhair; used for upholstery or stiffening in garments
6. a filamentous projection or process on an organism