[ace in the hole] {n. phr.} 1. An ace given to […]

[Achilles' heel] {n. phr.}, {literary} A physical or psychological weakness named […]

[acid head] {n.}, {slang} A regular user of LSD on whom […]

[acid rock] {n.}, {slang} A characteristic kind of rock in which […]

[acoustic perfume] {n.}, {slang} Sound for covering up unwanted noise, such […]

[act of faith] {n. phr.} An act or a deed that […]

[act of God] {n.} An occurrence (usually some sort of catastrophe) […]

[Agent Orange] {n.} A herbicide used as a defoliant during the […]

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

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