Helium, e.g. (3)
I believe the answer is:
gas
(Other definitions for gas that I've seen before include "Hydrogen possibly" , "Possibly noble" , "Petrol (US)" , "may fill American car" , "chew the fat" .)
I believe the answer is:
gas
(Other definitions for gas that I've seen before include "Hydrogen possibly" , "Possibly noble" , "Petrol (US)" , "may fill American car" , "chew the fat" .)