The Collaborative International Dictionary of English v.0.48:
Retriever \Re*triev"er\, n. 1. One who retrieves. [1913 Webster] 2. (Zool.) A dor, or a breed of dogs, chiefly employed to retrieve, or to find and recover game birds that have been killed or wounded. [1913 Webster]WordNet (r) 3.0 (2006):
retriever n 1: a dog with heavy water-resistant coat that can be trained to retrieve game