cocker spaniel

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A dog of a breed developed in the United States, having long drooping ears and a variously colored silky coat. It is smaller and has a more rounded head than the English cocker spaniel.
• noun Chiefly British An English cocker spaniel.

from the GNU version of the Collaborative International Dictionary of English.

• One of a breed of small or medium-sized spaniels kept for hunting or retrieving game or for household pets. They usually weigh from eighteen to twenty-eight pounds. They have the head of fair length, with square muzzle, the ears long and set low, the legs short or of medium length, and the coat fine and silky, wavy but not curly. Various colors are bred, as black, liver, red, black and white, black and tan, etc.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Either of two breeds of dog, the American cocker spaniel and the English cocker spaniel.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a small breed with wavy silky hair; originally developed in England