gas

1 gas /ˈgæs/ noun
plural gases also gasses
1 gas
/ˈgæs/
noun
plural gases also gasses
Britannica Dictionary definition of GAS
1 
a  : a substance (such as oxygen or hydrogen) that is like air and has no fixed shape
[count]
[noncount]
— see also laughing gas, mustard gas, natural gas, nerve gas, tear gas
b  [noncount] : a gas or mixture of gases that is burned as a fuel
2 
[noncount] US : gas in your stomach and intestines that causes pain or discomfort
◊ To pass gas is to release intestinal gas from your anus.
3 
US
a  [noncount] : gasoline
— sometimes used figuratively
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.
4 
[singular] US, old-fashioned slang : a very enjoyable or funny person, event, etc.
2 gas /ˈgæs/ verb
gasses; gassed; gassing
2 gas
/ˈgæs/
verb
gasses; gassed; gassing
Britannica Dictionary definition of GAS
1 
[+ object] : to poison or kill (someone) with gas
2 
US : to put gasoline in (a car, truck, etc.)
[+ object]
— usually + up
[no object]
— + up