Top Definition
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
A guy steps on home plate.
The crowd doesn't like that guy.
They shout "BOO".
"Boo, you stink a lot you bad player."
by medium bro December 03, 2006
Never ever gonna get butt love. Not even if there's a fire.
You: Hey how bout some bf later?

Me: booooo

Never gonna have it.
by Beefy one September 28, 2013
the incorrect spelling for the word Beau. most commonly used by people who have heard the word but do not know how to spell it. beau meaning: boyfriend or girlfriend. boo meaning: what a ghost says.
went out with my beau last night.
the ghost screamed boo
by chitownpaul October 12, 2011
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