gam (2)EnglishOxford New American Dictionarygam2 /ɡam, ɡæm / ▸ noun 1 rare a school of whales, porpoises, or dolphins. 2 US dialect a social meeting or informal conversation (originally one among whalers at sea). – ORIGIN mid 19th century : origin uncertain; perhaps from dialect gam ‘game’, or shortened from gammon3.