1. A number that comes after 3, and before 5. Duh.

2. A character from the blockbuster series "Divergent"(In my opinion, the best). In the book, he is Tris Prior's instructor in Dauntless (one of the factions in the city) initiation, but as the book goes on he eventually falls in love with her. His name is then found out to be Tobias Eaton, but his nickname is Four because he only has four fears; heights, confinement, shooting an innocent person, and his father abusing him. He is portrayed by Theo James (<3) in the movie released on March 21st in USA, April 4th in UK.
1. Person: How old are u?

Person 2: I am 4 years old.

2. Four: Welcome to Dauntless.
by _mymy_xx March 2, 2014
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a specialty burger from 'In 'n Out burger'. It's not on the menu, but if you ask for it...they know what it is.
"Can I have a four by four?"
"Isn't that a burger with four pieces of meat and four pieces of cheese? Sure, here you go."
"This burger is awesome!"
by Josh Allison December 2, 2003
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To be in agreement with someone. It can be used in place of the word "Yes". A short version of 10-4. Can be used by raising your four fingers at someone.
(John) Lets get out of this place and grab a few brews. (Tibbs) "Four"
by Steve Mogavero September 22, 2005
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A won who has children by multiple partners, for example four by four
I have four children.
So, are you a four by four?
by shazmac March 26, 2019
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The host of BFB (Battle For BFDI, Season 4 of BFDI). He has a lot of powers like zapping, screeching, etc.

Four is also a number (4) it is between 3 and 5 and is a square number. Its factors are 1, 2, and 4. It’s the first composite number and, the first number to have 3 factors
“Four, you promised me no more screeching!” -X BFB 18
by TwoSevenSixThree May 20, 2023
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Slang for 24" automotive rims.
Eh mayne! I got dem fo's (fours) on my new Donk!
by Adrian M.b. July 20, 2006
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