keratin | sense examples, Usage and Definition from wordnet dictionary online

Noun keratin has 1 sense

keratin, ceratin - a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair feathers nails and hooves
--₁ is a kind of scleroprotein, albuminoid
--₁ is a substance of horn; hair; feather, plume, plumage