either

  1. Determiner.  Each of two. (defdate, from 9th c.) .
  2. Determiner.  One or the other of two. (defdate, from 14th c.) .
  3. Pronoun.  (obsolete) Both, each of two (people or things).
  4. Pronoun.  One or other of two people or things.
  5. Adverb.  (context, conjunctive) as well.
  6. Conjunction.  Introduces the first of two options, the second of which is introduced by "or".

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This entry was last updated on RefTopia from its source on 3/20/2012.