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3.
The amount of money required to buy a spot in a poker tournament. It's also generally your starting amount of money in the tournament.
The buy-in for the annual World Series of Poker is $10,000.
by PsyMar June 26, 2004
7 3
 
1.
1.In poker, a term used to say how much money you have brought to the table at the beginning of your session.

2.In a poker tournament, buy-in is the amount of money that you pay towards the prize pool in order to enter the tournment.

3.any more money that is spent during the session is called a rebuy.
In a limit hold 'em game, the typical buy-in is usually 10 times the small bet. (in a 4/8 game, the min is $40)

the world series of poker buy-in is $10,000
by byrd June 28, 2004
36 5
 
2.
To take part in the system. Or become mainstream.
"I didn't sell out, Son, I bought in. Keep that in mind."
- Dad, SLC punk

The punk band did a total sell-out buy-in.
by Jamaal Ahmed June 28, 2004
26 11
 
4.
A nasty scam we used to pull on new employees when they got thier first full paycheck
Dude, it's payday! Come on down to the bar, it's buy-in!

I'll be there....What's buy-in?

You're buying the first round. See you there.
by KillAllHumans September 16, 2004
2 2
 
5.
A Poker term, when a player first sits down at the table and buys chips, it is called a "buy-in".
If a tournament is a $10,000 buy-in, then you must pay $10,000 to enter the game and you get that many chips.
by FISH June 28, 2004
2 3
 
6.
1) In poker, it is the minimum amount you can buy in terms of poker chips. It is the opposite of cash out

2) buying in can be similar to selling out the difference is semantics. Buying can apply to a line of thought or an ideal or whatnot.
1) "The buy in at the hold em table is $50."

2) "After moving to the USA, we bought in to the american lifestyle and values."
by dracula June 26, 2004
3 4