[whose] adj [ME whos, gen. of who, what] (bef. 12c): of or relating to whom or which esp. as possessor or possessors "~ gorgeous vesture heaps the ground --Robert Browning", agent or agents "the law courts, ~ decisions were important --F. L. Mott", or object or objects of an action "the first poem ~ publication he ever sanctioned --J. W. Krutch"
[2]whose pron, sing or pl in constr (13c): that which belongs to whom--used without a following noun as a pronoun equivalent in meaning to the adjective whose "tell me ~ it was --Shak."