look up any word, like b4nny:
 
86.
Boo
A cute way to express displeasure, or sympathetic feelings.

A shortened version of boo urns.
Person 1: "I don't want to go to work today"
Person 2: "Boo, work!"

Person 1: "My sister's kitten is sick"
Person 2: "Boo, sick kitty!"
by Naughtybat August 09, 2006
 
36.
boo
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
 
37.
boo
A word used to scare people.
Guy: "BOO!"
Guy2: "omgwtfbbq"
by Gracin July 11, 2005
 
38.
boo
A word used to scare a person
Person 1: BOOOO!!!
Person 2: AHHH!!!
by Reagan Lausche February 21, 2005
 
39.
boo
Sound that a fake ghost would make
Ghost:BOOOO!
Child:AHHHHHHH!
by BEYONCE November 08, 2003
 
40.
boo
Marijauna, pot.
I like boo, it keeps me happy the whole day because I don't know what the hell I'm doin.
by um..... Mr. Cheese December 23, 2002
 
41.
Boo
Another way of saying "okay" "good"
Guy1: You want food bro?

Guy2: nah i'm boo.
by Giggin November 17, 2013
 
42.
boo
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