1gas 
/ˈgæs/ noun
plural gas·es also gas·ses /ˈgæs/ noun 1 a : a substance (such as oxygen or hydrogen) that is like air and has no fixed shape [count] ▪ Carbon monoxide is a poisonous gas. ▪ a mixture of gases [noncount] ▪ clouds of gas — 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
▪ We heat our house with gas. ▪ Turn up the gas. ▪ Do you have a gas stove or an electric one? 2 [noncount] US : gas in your stomach and intestines that causes pain or discomfort
▪ Certain foods give me gas. [=(Brit) wind] ▪ stomach gas ▪ intestinal gas ◊To pass gas is to release intestinal gas from your anus.
▪ I accidentally passed gas [=(less politely) farted] during the meeting. It was so embarrassing! 3 US a [noncount] : gasoline
▪ We need to stop for gas. [=(Brit) petrol] ▪ high gas prices ▪ The car gets good gas mileage. ▪ The car almost ran out of gas. — sometimes used figuratively ▪ The pitcher ran out of gas [=became tired] in the seventh inning.
b the gas informal : the accelerator pedal of a vehicle
▪ He was driving with one foot on the gas and one foot on the brake. ◊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.
▪ The party was a gas. ▪ Your uncle cracks me up. What a gas!
b [noncount] : a gas or mixture of gases that is burned as a fuel
▪ We heat our house with gas. ▪ Turn up the gas. ▪ Do you have a gas stove or an electric one?
▪ Certain foods give me gas. [=(Brit) wind] ▪ stomach gas ▪ intestinal gas ◊To pass gas is to release intestinal gas from your anus.
▪ I accidentally passed gas [=(less politely) farted] during the meeting. It was so embarrassing!
▪ We need to stop for gas. [=(Brit) petrol] ▪ high gas prices ▪ The car gets good gas mileage. ▪ The car almost ran out of gas. — sometimes used figuratively ▪ The pitcher ran out of gas [=became tired] in the seventh inning.
b the gas informal : the accelerator pedal of a vehicle
▪ He was driving with one foot on the gas and one foot on the brake. ◊If you step on the gas or hit the gas, you suddenly press down on the accelerator to drive at a higher speed.
▪ The party was a gas. ▪ Your uncle cracks me up. What a gas!
