Nouns

(n)haira 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”, “each hair consists of layers of dead keratinized cells”
(n)hair's breadth, hairsbreadth, hair, whiskera very small distance or space“they escaped by a hair's breadth”, “they lost the election by a whisker”
(n)hair, fuzz, tomentumfilamentous hairlike growth on a plant“peach fuzz”
(n)hair, pilusany of the cylindrical filaments characteristically growing from the epidermis of a mammal“there is a hair in my soup”
(n)haircloth, haircloth woven from horsehair or camelhair; used for upholstery or stiffening in garments
(n)haira filamentous projection or process on an organism