BB
1. adjective
in sports betting, said of consecutive wagers. An initialising of 'back-to-back' US, 1973
2. noun
1
in baseball, a fastball. A pitch thrown so fast that it seems as small as a BB pellet to the batter US, 1970.
2
any smart person, especially a professor. An abbreviation of 'big brains' US, 1947.
3
a male homosexual. An abbreviation of BUM BOY UK, 1961