One of two; the one or the other; -- properly used of two things, but sometimes of a larger number, for any one, Each of two; the one and the other; both; -- formerly, also, each of any number, adverb_ after a negative statement used as an intensive meaning something like `likewise' or `also', conjunctive, after a negative as well, conjunction_ Either precedes two, or more, co”rdinate words or phrases, and is introductory to an alternative It is correlative to or, Introduces the first of two options, the second of which is introduced by "or", pronoun_ One or other of two people or things, obsolete Both, each of two (people or things)