Nouns

(n)pantthe noise made by a short puff of steam (as from an engine)
(n)trousers, pair of trousers, pant(usually in the plural) a garment extending from the waist to the knee or ankle, covering each leg separately“he had a sharp crease in his trousers”
(n)gasp, panta short labored intake of breath with the mouth open“she gave a gasp and fainted”

Verbs

(v)pant, puff, gasp, heavebreathe noisily, as when one is exhausted“The runners reached the finish line, panting heavily”
(v)pantutter while panting, as if out of breath