Teat \Teat\ (t[=e]t), n. [OE. tete, titte, AS. tit, titt; akin to LG. & OD. titte, D. tet, G. zitze: cf. F. tette, probably of Teutonic origin.] 1. The protuberance through which milk is drawn from the udder or breast of a mammal; a nipple; a pap; a mammilla; a dug; a tit. [1913 Webster] 2. (Mach.) A small protuberance or nozzle resembling the teat of an animal. [1913 Webster]