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One of Odin's two ravens. Munin is Memory. See Thought and Memory.
The whole world wide, every day,
Fly Hugin and Munin;
I worry lest Hugin should fall in flight,
Yet more I fear for Munin.
by OneBadAsp October 28, 2006
An annoying person. Usually sexually unattractive and or gay.
Dude, would you just shut up, you munin.
by Davis Meier January 06, 2006