1 definition by Ross Mackay

Top Definition
1) The action of repeatedly lifting weights in order to build muscle.

2) A feeling denoting extreme excitement.

3) To reload a pump-action shotgun.
1) I'm gonna go pump some iron!

2) Man, I'm pumped about the gig.

3) I think you have an idea what this is like.
by Ross Mackay July 06, 2005

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