Teat (noun)

1. The mammary gland of a mammal, especially a cow, sheep, or goat, from which milk is obtained.
2. The organ of a mammal, typically located on the chest, that produces milk and is used to feed young.

Origin:

From middle english teete, from old english tēat, from proto-germanic *taitaz, from proto-indo-european *dāy- ("to suc.k")

Examples:

1. The cow's teats were swollen with milk.
2. The puppy was suckling at the mother's teat.
3. The teat was sore from being overused.
4. The teat was cleaned before the milking process.
5. The teat was swollen and hard.