gasp gasp /ˈgæsp/

noun

1. () A short labored intake of breath with the mouth open  ( pant , gasp )
   a short labored intake of breath with the mouth open
    She gave a gasp and fainted
   she gave a gasp and fainted
   

verb

1. () Breathe noisily, as when one is exhausted  ( heave , puff , gasp , pant )
   breathe noisily, as when one is exhausted
    The runners reached the finish line, panting heavily
   The runners reached the finish line, panting heavily