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2.
Drunk, inebriated or intoxicated with alcohol.

Most likely derived from the single handled drinking vessel of the same name.
"Did you see Steve last night? He was absolutely tankard!"
by Paul Stead February 26, 2008
 
1.
Yet another thrash band. This all German quartet sings mainly about beer, liquor, and wine.
Damn, tankard has a wierd sound.
by ANTHRAXVIRIS April 13, 2005