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A dope fiend or junkie who cons people into pumping their gas at a gas station for spare change to buy Crack or Cocaine
Damn look at that Pump Master over there, what a loser
by bapekid4 November 05, 2006
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2
One who participates in the smoking of either cigarettes or pot to the extreme.
Better keep the gear away from the pumpmaster or it'll be the last you see of it.
by Darrell Smith June 17, 2005
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3
A person qualified to perform pumps on various activities, for example pumping air into tires.
"yo, i heard bunty is the pump master of Brampton."
"Yeah guy, he uses his pumping skills too much"
by jassi123456 November 14, 2015
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