—adj. every one of two or more persons or things, regarded separately (each person; five in each class).
—pron. each person or thing (each of us; have two books each; cost a penny each).
Phrases and idioms:
each and every every single. each other one another (used as a compound reciprocal pron. : they hate each other; they wore each other's hats). each way Brit. (of a bet) backing a horse etc. for both a win and a place.
Etymology: OE aeliglc f. WG (as AYE, ALIKE)
Useful english dictionary. 2012.