Top Definition
A really nice girl, who displays a pretty little shy smile when she's happy.

She doesn't talk too much.

You can tell how she feels though, by looking into her beaming eyes and watching for her little moonbeam smile!
Ted: I never noticed that cute girl before, but she's really got a beautiful little smile!

Fred: Yeah, Her smile is like a pretty little ray of light. We call her Moonbeam!
by Real 1ne May 12, 2010

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a slang for a flashlight in the the Marine Corps.
Sgt: Hey Pvt Jenkins! throw me that moon beam! its dark as hell in that camp.
Pvt: Here you go sir!
by Numlock June 29, 2006

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1. A governor from the state of California whose radical views earned him the name Moonbeam back in the '70s and early '80s

2. Replacement for the Governator
Will Governor Moonbeam save California? Stay tuned...
by calif2011 January 05, 2011

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The great savior osprey who sits a top of Mt. zerczeus. The true messiah
1..2..3..moonbeam
via giphy
by Toenail 5 January 24, 2017

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when a girl blows air in your butt and makes you fart in her face.
after surfing and getting so pitted i got moonbeamed by my girlfriend moonbeam .
by Tacolover9000 September 23, 2016

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Moonbeam is a very shy girl. Plays by herself but is loving and caring. Moonbeam is a rare name but if you meet one, you'll have to get to know her. She is also very pretty!
Moonbeam is awesome!

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What is a Moonbeam? Moonbeams are pretentious left wing women who constantly refer to "What I read in the Times the other day." (meaning the NY Times)....they are anti-religion, make disparaging remarks about people who have religious beliefs and believe the 1960's worldview is still valid in today's world. Their significant "other" is usually the anti-alpha male.....Moonbeams are also anti-military, never mind that the military protects their delusional lifestyle.
Moonbeam dragged her significant other to another peace dedication and told him to shut up and sit down.
by KatieKlock August 15, 2014

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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