Definitionoral sex on a man. Chiefly gay usage. See fellatio for synonyms.
2. To masturbate the penis in the armpit of a partner.
SYNONYMS: axillary intercourse; axillism; bagpipe (or bagpiping); coitus in axilla; maschalation; penis-to-armpit intercourse; pit job.
SEE ALSO: hircusophilism (preference for underarm hair); masehalophilous (arousal from armpits).