Top Definition
pronounced: moon-kaf

1. A misshapen foetus; a monstrosity or freak.
2. a person with a mental handicap; a born fool.
3. a person who gazes at the moon or idles time away; an absent-minded person.
4. An animal imagined to inhabit the moon.
Nerd: You're such a mooncalf!
Jock: Huh?
by Non-Cretin June 04, 2005

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