noun
plural gases also gasses
a substance (such as oxygen or hydrogen) that is like air and has no fixed shape [count]
[noncount] :a gas or mixture of gases that is burned as a fuel
[noncount] US :gas in your stomach and intestines that causes pain or discomfort
To pass gas is to release intestinal gas from your anus.
US
[noncount] :gasoline
b the gas informal :the accelerator pedal of a vehicle
If you step on the gas or hit the gas, you suddenly press down on the accelerator to drive at a higher speed.
[singular] US old-fashioned slang :a very enjoyable or funny person, event, etc.
verb
gasses; gassed; gassing
[+ obj] :to poison or kill (someone) with gas
US :to put gasoline in (a car, truck, etc.) [+ obj]
usually + up
+ up
US