Yes, ‘teet’ is a word, but it is not commonly used in modern English. It is an archaic term that refers to the nipple of a mammal, particularly in the context of animals. In some dialects, it can also mean a small amount or a little bit.
For example, in older texts or regional dialects, you might come across sentences like: ‘The calf nuzzled against its mother’s teet.’ However, in contemporary English, the word ‘teat’ is more commonly used to refer to the nipple of an animal.
It’s important to note that ‘teet’ is not a standard word in everyday conversation, and you are more likely to encounter ‘teat’ instead. If you are writing or speaking in a modern context, it is advisable to use ‘teat’ to avoid confusion.