queen bee n.
1. [1950s–70s] in gay uses [queen n. (2a) + SE bee but ? abbr. bitch)].
(a) a woman who likes to surround herself with young men, who may or may not be homosexual.
(b) as sense 1a but of a man, usu. homosexual himself.
2. [2000s] (US black) the woman with the largest breasts in a group.