1. Someone you love and adore.
2. An exclamation capable of giving old people cardiac arrest
I love her, she's my boo.

Person 1: BOO!
Person 2: dies of cardiac arrest
by yvt4 July 24, 2019
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To go to the bathroom and do number 2
Dang cuz I gonna go boo boo
by Bre December 17, 2004
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don't u ever do that boo-boo again, or u'll lose ur job!
by Varsha June 2, 2005
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Its a big scary
Tony: boo
Mark: ahhh
Tony: oh hi mark
by Whatacunundrum September 2, 2020
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Slayra scared me last night, she went boo while I was listening to Oliver Sykes, and then Oliver Sykes screamed simultaneously as I threw the phone across the room.
by Fayra <3 November 5, 2022
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After 4 long years of dating, you start making up stupid fucking words to describe your love for your partner.
"Boos, what's up?"
"BOOSY BOOS"
"Boosaidan"
by BoosyBoos January 13, 2016
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