Definition each in American English

Each can be used in the following ways:

as a determiner (followed by a singular countable noun): in each corner of the room

as a pronoun: three windows, with a different view from each (followed by “of”): I want each of you to fill out an application. (after a plural subject): They each did their part. (after a plural object or a number): I gave them each a copy of the script.The cassettes are on sale for $6.00 each. (after a modal or auxiliary verb, or after the verb “to be”): We can each choose our own subject for research.Federer and Nadal had each won two games.

in the phrase each other: We always try to help each other.

When each is part of the subject of a sentence, it is used with a singular verb, except when it follows a plural subject: Each man hunts alone.They each do their share of the work.

In formal writing, a pronoun or possessive adjective that refers back to a noun subject with each is usually singular: Each student has his or her own place in the library. However, in conversation and informal writing these pronouns and possessives are often plural, although some people consider this incorrect: Each student has their own place in the library.