Yes, pant is a Scrabble word!

Verb

1. Breathe noisily, as when one is exhausted

2. Utter while panting, as if out of breath

Noun

1. The noise made by a short puff of steam (as from an engine)

2. (usually in the plural) a garment extending from the waist to the knee or ankle, covering each leg separately

3. A short labored intake of breath with the mouth open