A military phrase meaning to suck it up and drive on or walk it off.
WHAT?! Your feet hurt? Ruck up, Nancy!
by Soldierboy Jim November 8, 2013
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Military term refers to a ruck sack which is another name for a back pack. May also refer to all of ones personal web gear. To "ruck up" is grab your gear and go!
by boss June 10, 2005
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