noun

• (uncountable, physical chemistry) Matter in an intermediate state 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 by deposition.
  "A lot of gas had escaped from the cylinder."
• (uncountable, physical chemistry) Matter in an intermediate state 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 by deposition.
  "Gas-fired power stations have largely replaced coal-burning ones."
• (uncountable, physical chemistry) Matter in an intermediate state 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 by deposition.
  "The artillery fired gas shells into the enemy trenches."
• (countable, physical chemistry) A chemical element or compound in such a state.
  "The atmosphere is made up of a number of different gases."

verb

• (transitive) To attack or kill with poison gas.
  "The Nazis gassed millions of Jews during the Holocaust."
• (transitive) To use poison gas in (a volume or area) to attack or kill someone or something.
  ""He's been waiting to jump my brain-bones since I left R&E. I could feel him hammering on the door." She trotted to the nearest wall and knocked on it for emphasis. "But whatever it is that makes us remember the good old days, it also makes us impossible to possess now. That's why Willie and I both woke up, and why Noè never got taken out by Mukami. So all I had to do was open my mind up to the guy, invite him in, then... gas the foyer, as it were.""
• (intransitive, slang) To talk in a boastful or vapid way; to chatter.
  "[…] (it was the town's humour to be always gassing of phantom investors who were likely to come any moment and pay a thousand prices for everything) — “[…] Them rich fellers, they don't make no bad breaks with their money. […]”"
• (transitive, slang) To impose upon by talking boastfully.
  "I went shop and the boss man said "Don't pay me it's fine" and I said ...(whaaat): "You ain't gotta gas, I'm gas fam" ( don't gas me), "You ain't gotta gas, I'm gas fam"."

noun

• (uncountable, Canada, US, New Zealand, Philippines) Gasoline, a light derivative of petroleum used as fuel.
• (uncountable, by extension) Ellipsis of gas pedal; accelerator, throttle.
• (uncountable, cryptocurrencies) An internal virtual currency used in Ethereum to pay for certain operations, such as blockchain transactions.
  "gas fee"
• (slang, uncountable) Marijuana, typically of high quality.

verb

• (US) To increase the fuel flow to a vehicle's engine in order to accelerate it.
  "The cops are coming. Gas it!"
• (US) To fill (a vehicle's fuel tank) with fuel.
  "Between 0945 and 1020 six definite explosions were reported in the hangar. Explosions at 0945 and 1006 were described as minor while those at 1002, 1003 and 1005 were classed as major explosions and the explosion at 1020 was described as a heavy explosion but less severe than some previous ones. The cause of these explosions was not reported and can only be estimated from the damage sustained by the ship and the known condition of loading. Each of the six torpedo planes spotted in the hangar was armed with one Mark 13, torpex-loaded torpedo and was fully gassed, including auxiliary wing tanks. Explosions in the hangar therefore might have been either detonations of torpedoes or gasoline vapor explosions."