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English definition of “gas”

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gas

noun uk   /ɡæs/ us  

gas noun (AIR SUBSTANCE)

B2 [C or U] a substance in a form like air that is neither solid nor liquid: Oxygen, hydrogen and nitrogen are all gases. poisonous/inflammable/toxic gasA2 [C or U] a substance in a form like air that is used as a fuel for heating and cooking: Do you prefer cooking with electricity or gas? UK A leak in the gas mains (= pipes) caused a major explosion. a gas-fired power station [U] informal a substance in a form like air used for medical purposes to prevent people feeling pain or being conscious during an operation: I had/was given gas when I got my wisdom teeth out. [U] mainly US ( UK wind) air in the bowels or in a baby's stomach, especially that which makes you feel uncomfortable or makes noises: Beer gives me gas.
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gas noun (LIQUID FUEL)

A2 [U] US ( also formal gasoline, UK petrol) a liquid obtained from petroleum , used especially as a fuel for cars, aircraft, and other vehicles: I'll stop and get some gas - we're running low. a gas tank/pumpthe gas [S] mainly US the part of a car that you push with your foot to make it go faster: Step on the gas (= drive faster)!
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gas noun (ENJOYABLE SITUATION)

[S] mainly US informal a funny or enjoyable situation: Some kids put on a show for the moms and dads, - it was a gas.

gas

verb uk   /ɡæs/ (-ss-) us  

gas verb (POISON)

[T] to kill or injure a person by making them breathe poisonous gas: Hundreds of thousands of soldiers were gassed in the First World War.

gas verb (TALK)

[I] old-fashioned informal to talk for a long time about things that are not important: Susan came round and we sat gassing for hours.
Phrasal verbs
(Definition of gas from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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