A short, sudden intake of breath.

(Britain, slang) : A draw or drag on a cigarette (or gasper).

(intransitive) To draw in the breath suddenly, as if from a shock.

(intransitive) To breathe quickly or in a labored manner, as after exertion; to respire with heaving of the breast; to pant.

(transitive) To speak in a breathless manner.

To pant with eagerness or excitement; to show vehement desire.

(humorous) The sound of a gasp.