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1.
A recycling dumpster.
Mix between a dumpster and a recycling bin.(A big recycling bin that looks like a dumpster.)
"Are you gonna recycle those bottles? And take them to the rumster."
by jhfyuvjh February 03, 2008
 
2.
One who's facial features resemble that of the most successful Grand National horse of all time, Red Rum.

An Ugly fucker.

Someone with a long face and big nashers.
Is Rumster coming tonight or is he running in the 1.30 at Chepstow tomorrow?
by YoricHunt December 05, 2007