1. noun /ɡæs/
a) Matter in a state intermediate between liquid and plasma that can be contained only if it is fully surrounded by a solid (or held together by gravitational pull); it can condense into a liquid, or can (rarely) become a solid directly.
A lot of gas had escaped from the cylinder.
b) A chemical element or compound in such a state.
The atmosphere is made up of a number of different gases.
2. verb /ɡæs/
a) To kill with poisonous gas.
The battery cell was gassing.
The cops are coming. Gas it!
3. adjective /ɡæs/
Marys new boyfriend is a gas man.
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