Folk  n. (pl. Same or -s) 1 (treated as pl.) People in general or of a specified class (few folk about; townsfolk). 2 (in pl.) (usu. Folks) one's parents or relatives. 3 (treated as sing.) A people or nation. 4 (in full folk-music) (treated as sing.) Colloq. Traditional music or modern music in this style. 5 (attrib.) Of popular origin (folk art). [old english]