1. To breathe noisily, as when one is exhausted; SYN. puff, gasp, heave.
2. To utter while panting, as if out of breath.

Of or relating to pants

1. A panting breath; the visible movement of the chest accompanying such a breath
2. A throbbing or puffing sound
3. The noise made by a short puff of steam (as from an engine).

An outer garment covering each leg separately and usually extending from the waist to the ankle — usually used in plural