Pant is a verb meaning to breathe quickly with short breaths, usually after physical exertion.
As a noun, pant can refer to:
1. A short, quick breath
2. (plural) Trousers, especially tight-fitting ones (mainly US usage)
3. The sound of rapid breathing
Other meanings include:
• In heraldry: a representation of a panting animal
• In machinery: a pulsating motion