hide, pelt, skin - body covering of a living animal

hypodermis - layer of cells that secretes the chitinous cuticle in e.g. arthropods

feather, plumage, plume - the light horny waterproof structure forming the external covering of birds

protective covering - tough natural covering of some organisms

cutis, skin, tegument - a natural protective covering of the body; site of the sense of touch; "your skin is the largest organ of your body"

exuviae - cast-off skins or coverings of various organisms during ecdysis

hair - dense growth of hairs covering the body or parts of it (as on the human head); helps prevent heat loss; "he combed his hair"

headful - a covering over the surface of your head; "a headful of tight curls"; "a headful of lice"

epicranium - the muscle and aponeurosis and skin covering the cranium

exoskeleton - the exterior protective or supporting structure or shell of many animals (especially invertebrates) including bony or horny parts such as nails or scales or hoofs

covering, natural covering, cover - a natural object that covers or envelops; "under a covering of dust"; "the fox was flushed from its cover"