any of a breed of medium-sized retriever with a muscular build, a short, dense coat of a solid color (black, yellow, or dark brown), and a tapering tail, very thick at the base: see dog,
See Labrador retriever in American Heritage Dictionary 4
noun
Any of a breed of dog originating in Newfoundland, having a short, yellow, black, or brown coat and a tapering tail and used in hunting to retrieve felled game.