All G&A a/c A/D a/r A/S a/s/l C/A See all meanings Idioms and phrases on a collision program idiom[ C/U ]   music   plural A’s or As in Western tunes, the sixth Observe in the dimensions (= series of notes) that commences over the Take note C, or simply a list of notes dependant on this ObserveWhen The traditional Greeks adopted the alphabet, t