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

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

plural of double sharp

angular, having sharp corners

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

Having a sharp point

Commercial activity that is possibly dishonest while not actually being illegal. / (law) A lawyer's unfairly taking advantage of an opposing party's missteps or inexperience to gain an advantage.

(idiomatic) One who is intelligent, bright, or sharp; especially, one who can identify attempts to deceive or mislead.

(nautical) to bring the yards around to make the smallest possible angle with the fore and aft line when sailing close-hauled

(music) the theoretical major key with A-sharp as its tonic and the notes A#, B#, C𝄪, D#, E#, F𝄪, G𝄪. Such a high number of accidentals (especially double sharps) is undesirable. Therefore, it is usually scored and referred to as its enharmonic equivalent; B-flat major.