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A douchey/ middle management way to say "let's come back to that later," or, "hold that thought." Increasingly popular in business speak.

Possibly originally from WWII, referring to putting a pin back in a hand grenade so it won't go off.
Employee: "Will we have health benefits during the furlough?"

Mid-level boss: "Let's just put a pin in that, for now."
by tubalcain July 23, 2009
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