Definition of "Gas" :

noun: a pedal that controls the throttle valve

"He stepped on the gas."

noun: a state of excessive gas in the alimentary canal

noun: the state of matter distinguished from the solid and liquid states by: relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily; and the spontaneous tendency to become distributed uniformly throughout any container

noun: a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines

noun: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely

noun: a fossil fuel in the gaseous state; used for cooking and heating homes

verb: show off

verb: attack with gas; subject to gas fumes

"The despot gassed the rebellious tribes."