determiner All; every; qualifying a singular noun, indicating all examples of the thing so named seen as individual or separate items (compare every).
Make sure you wash each bowl well.
adverb For one; apiece; per.
The apples cost 50 cents each.
adverb Individually; separately; used in a sentence with a plural subject to indicate that the action or state described by the verb applies to all members of the described group individually, rather than collectively to the entire group.
We ordered half a chicken each, but we each got a whole one.
pronoun Every one/thing individually or one by one.
I'm going to give each of you a chance to win.
noun An individual item: the least quantitative unit in a grouping.