Definition of Chap 1. A boy or man Noun 2. A long narrow depression in a surface Noun 3. A crack in a lip caused usually by cold Noun 4. (usually in the plural) leather leggings without a seat; joined by a belt; often have flared outer flaps; worn over trousers by cowboys to protect their legs Noun 5. Crack due to dehydration Verb Morphology of "chap" Synonyms for word "chap" Semanticaly linked words with "chap" Hyponims for word "chap" has derived form chapman etymology chapess etymology chapfallen etymology chapless etymology chappo etymology chappy is derived from chapped is derived from chappie is derived from chapping is derived from chappo is derived from chappy is derived from chaps is derived from chapstick