Collective noun for a group of onions. Usually used to describe a large amount of onions
Wow, he's bought a monion of onions from the shop today!
by InvivnI July 11, 2010
A contraction of the words male and onion-booty. Used to describe a man's ass that looks so good it makes you want to cry.
That guy's monion is as fine as any woman's booty.
by Mandingo_DeSade August 25, 2010