hairs

noun

1. A pigmented filament of keratin which grows from a follicle on the skin of humans and other mammals.
2. The collection or mass of such growths growing from the skin of humans and animals, and forming a covering for a part of the head or for any part or the whole body.“In the western world, women usually have long hair while men usually have short hair.”
3. A slender outgrowth from the chitinous cuticle of insects, spiders, crustaceans, and other invertebrates. Such hairs are totally unlike those of vertebrates in structure, composition, and mode of growth.
4. A cellular outgrowth of the epidermis, consisting of one or of several cells, whether pointed, hooked, knobbed, or stellated.“Internal hairs occur in the flower stalk of the yellow frog lily (Nuphar).”