(idiomatic) The practice or characteristic of speaking to others in a harsh, critical, or insulting manner.

(simile, colloquial) very intelligent

(music) In microtonal music, a note played three quarter tones higher than a natural.

plural of double sharp

(music) An accidental that indicates that a note should be played a whole step higher.

angular, having sharp corners

(music) a minor key with the notes A♯, B♯, C♯, D♯, E♯, F♯, G♯

(dated, idiomatic) eager in appetite or desire of gratification; ravenous

mixed connective tissue disease

(chiefly imperative) Pay attention; be alert. / (chiefly imperative) Hurry up; work quickly.