Moom is the noon of the night. Midnight is to moom as midday is to noon. It can be used when "midnight" is just too many syllables to get through.
"Can't make it tonight bro, I won't be done with your mom until moom."
by _drone_ April 15, 2019
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1) 'Everything', It is used to confuse others. (n)

2) A rubber blue cow, which was beheaded. (n)
1) "What is Moom!" -- "It is everything *walks away*"

2) Moom has no head.
by ben February 08, 2004
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to be slightly saddened when you hear or experience something that you do not like or that has otherwise make you feel unhappy in some way.
georgina: "how am i smelling today"

peter: "not so fresh"

georgina: "ow moom"
by Mezzaj January 24, 2012
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You know, if sometime tommorrow moom got into a car accident and died horribly while his children watched, I'd do nothing but laugh, because that'd be one less Hitler lover in the world.
by TallicaD00d October 12, 2004
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The act of being lazy. A "moomey-like" approach to life.
I'm really tired, I think I'm just going to moom out for awhile.

Where is Kyle? Oh hes just moomin out on his couch.
by Derelicte25 April 10, 2008
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