Teat n. : 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.

Teat n. : A small protuberance or nozzle resembling the teat of an animal.

Example:
How can I get my 13 week old kittens to take to a Teat?

Taxonomy
teat, mammary gland, free encyclopedia, two teats, goat suckling, humans, breast, Germanic origin, suckle, pores, The offspring, udder, eutherian mammals, search, been suggested that this article, baby goat, cows, projections.

Defination from the web:
... bottle and pacifier may also be referred to as a teat. The word "teat" is of Germanic origin, having the same origin as the Dutch ... The offspring of domestic animals, including piglets, calves, lambs, and foals, engage in a behavior known as teat seeking, sipping, and suckling. ...