1. (also acey, acey-deucey) best, excellent, wonderful.
see separate entry.
[1950s+] (US campus) one’s best friend.
[1940s] (US) excellent, first-rate.
[1980s+] (US black) a very close friend.
[1940s] (US black, mainly Southern/Midwest) one’s most important lover, the most important member of the opposite sex one knows, e.g. a husband, a pimp, a boyfriend.
[1950s] (US teen) the leader of a teen street gang.
[1960s] (US black) very best.
[1970s+] (N.Z./US gay/prison) a very effeminate (prison) homosexual.