gas
/ɡæs/
Matter in a state intermediate between liquid and plasma that can be contained only if it is fully surrounded by a solid (or in a bubble of liquid) (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.
A chemical element or compound in such a state.
The atmosphere is made up of a number of different gases.
A flammable gaseous hydrocarbon or hydrocarbon mixture (typically predominantly methane) used as a fuel, e.g. for cooking, heating, electricity generation or as a fuel in internal combustion engines in vehicles.
Gas-fired power stations have largely replaced coal-burning ones.
A hob on a gas cooker.
She turned the gas on, put the potatoes on, then lit the oven.
Methane or other waste gases trapped in one's belly as a result of the digestive process.
My tummy hurts so bad, I have gas.
A humorous or entertaining event or person.
He is such a gas!
Frothy talk; chatter.
A fastball.
The closer threw him nothing but gas.
Arterial or venous blood gas.
Marijuana, typically of high quality.