Top Definition
a lowly gutter gnome that rapes land mice as a hobby. Also known to sucks the salt off pretzels and then uses the saltless pretzels as a back scratch. Smells like butt crust.
Emily: I just met the nicest guy!
Andy: Oh God, is he an ambartsumian? I bet he's an ambartsumian. Did you meet him in a sewer?
by scrotumambartsumian December 07, 2010

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