Dictionary
rel'ative pro'noun
one of the pronouns
who, whom, which, what, their compounds with
-ever or
-soever, or
that used as the subordinating word to introduce a subordinate clause, esp. such a pronoun referring to an antecedent. Cf.
definite relative pronoun, indefinite relative pronoun. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.