dog collar dog·col·lar uncommon noun 1. a collar for a dog Synonymsdog collar 2. a stiff white collar with no opening in the front; a distinctive symbol of the clergy Synonymsclerical collarRoman collardog collar 3. necklace that fits tightly around a woman''s neck Synonymschokercollardog collarneckband Related words Word family collarchoke Broader terms necklacecollar WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.