gas

gas (http://definr.com/gas)

     n 1: 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
     2: a fluid in the gaseous state having neither independent
        shape nor volume and being able to expand indefinitely
     3: a volatile flammable mixture of hydrocarbons (hexane and
        heptane and octane etc.) derived from petroleum; used
        mainly as a fuel in internal-combustion engines [syn: gasoline,
         gasolene, petrol]
     4: a state of excessive gas in the alimentary canal [syn: flatulence,
         flatulency]
     5: a pedal that controls the throttle valve; "he stepped on the
        gas" [syn: accelerator, accelerator pedal, gas pedal,
         throttle, gun]
     6: a fossil fuel in the gaseous state; used for cooking and
        heating homes [syn: natural gas]
     v 1: attack with gas; subject to gas fumes; "The despot gassed
          the rebellious tribes"
     2: show off [syn: boast, tout, swash, shoot a line, brag,
         blow, bluster, vaunt, gasconade]