(music) The major key with A as its tonic, with the notes A, B, C♯, D, E, F♯, and G♯, the key signature of which has three sharps. / (music) The major chord with a root of A.

(music) The major key with A-flat as its tonic, consisting of the pitches A♭, B♭, C, D♭, E♭, F, and G. / (music) The major chord with a root of A-flat.

(music) the minor key with A as its tonic / (music) the minor chord with a root of A

(vulgar) Energetic but useless action, or a person engaged in such action.

A traditional greeting for Christmas and the new year.

(intransitive, Canada, US slang) To turn left, to take a left turn.

(intransitive, US slang) To turn right, to take a right turn.

An indefinite and somewhat large number; more than a few; a fair number of.

An indefinite and somewhat large number.

(set phrase, colloquial) Suddenly, quickly, without warning.