respire in WordNet English dictionary

1. draw air into, and expel out of, the lungs
   "I can breathe better when the air is clean"; "The patient is respiring"
   breathe  take a breath  respire  suspire 
   
2. undergo the biomedical and metabolic processes of respiration by taking up oxygen and producing carbon monoxide
   respire 
   
3. breathe easily again, as after exertion or anxiety
   respire