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 Notice in the size (= number of notes) that starts around the Take note C, or possibly a set of notes dependant on this Notice[4] The Roman variety ?a? is located in most printed produc