The Collaborative International Dictionary of English v.0.48:

Pina colada \Pi"[~n]a co*la"da\ [Sp., strained pineapple.]
   A sweet mixed drink made from rum, pineapple juice, and cream
   of coconut, mixed with crushed ice.
   [PJC]

WordNet (r) 3.0 (2006):

pina colada
    n 1: a mixed drink made of pineapple juice and coconut cream and
         rum