[air shuttle] {n.}, {informal} Air service for regular commuters operating between […]

[airbus] n. A trade name, also used informally for a wide-bodied […]

[airquake] {n.} An explosive noise of undetermined origin usually heard in […]

[AIUI] "As I understand it"

[AKA] "Also known as", predates the Internet.

[albatross around one's neck] {n. phr.}, {literary} Guilt, the haunting past, […]

[alert] See: [ON THE ALERT].

[alive] See: [COME ALIVE], [KNOW --- IS ALIVE], [LOOK ALIVE], [SKIN […]

[alive and kicking] {adj. phr.} Very active; vigorous; full of energy. […]

[alive with] {prep.}, {informal} Crowded with; filled with. * /The lake […]