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Someone you love. Someone you care about. Someone who is a life time best friend.
Someone who is always there for you. Someone who is extremely pretty. Someone who is very important in your life. Someone who can make you laugh. Someone who you can never replace.
I love Harrie, she’s my boo
by Mafaaa September 13, 2018
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3
A boo is a girl/guy that can be there for you whenever you need them therefore you might even call your love one boo
Hey,"boo" how is it going.
by Wiley_Redcrane23 February 15, 2015
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4
1. Boyfriend or girlfriend
2. Word used to scare people
1. Can you handle me? If you can't you ain't gonna be my boo.

2. Guy: BOO!
Guy 2: Holy sh*t!
by Antony June 08, 2004
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5
boo is a term that is derived from the French word "beau" meaning beautiful. In 18th century England it meant an admirer, usually male. It made it's way into Afro-Caribean language perhaps through the French colonisation of some Caribean islands.

Now meaning girl or boyfriend
"this is what I'm saying boo, it's all about you"
by juicy February 14, 2004
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A small spherically shaped ghost that is only visable when your back is turned.
Mario tried to kill the boo, but every time he turned around to hit it, it vanished.
by naveregnide May 22, 2007
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7
A term of endearment and affection used to identify your perfect counterpart. Your "boo" is extremely complementary to your own personality, and is always willing to take on any adventure with you, without hesitancy. Always there for you, one can never become sick of their "boo." Times together are a good time to be had by all, and times apart come with a significant void that can only be filled by 1 person - your boo.
Boo 1: Damn I miss my Boo.
Boo 2: Don't worry, we'll get some Boo to the Two time on again soon.
Boo 1: I hope so, I need everything I do to be fun again. As long as I'm with my Boo nothing can ever be lame.
by bernice jacobson October 02, 2009
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