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1.
A small trash can designed to look like a cat that is used to store and serve large quantities of alcoholic beverage, or the beverage contained therein.
Let's bring trashcat along for the party tonight so we can get some frosh wasted.

My head hurts, I shouldn't have drank so much trashcat at the rocky horror party last night.
by Velocirobter January 06, 2012
 
2.
A cat that spends its existence in a trash bin and is not amused easily.

it often spends its time on the internet, mostly lolcats.com
holy shit, look its trash cat!
by Ryuno July 07, 2008