Definition of rebuy
Rebuying can mean two different actions depending on whether you are playing tournament poker or cash game poker. A rebuy in a tournament is the action of buying in when you're out of chips and have lost all your chips. If the tournament is a rebuy, it may also allow us to add chips to our stack (up to a maximum of 2 full racks). In cash game play, a rebuy means adding money to your stack. It can be a rebuy of 1 up to 100 big blinds. Generally, cash games limit the number of big blinds to 100.
If the tournament is rebuy, read the details carefully
Rebuy tournaments are very common. But there are tons of different types of rebuy tournaments. For this reason, we encourage you to read the tournament details carefully. Some tournaments allow only 1 rebuy. Some tournaments allow unlimited rebuys in the first hour. Some tournaments allow rebuys for the first 2 hours. Some tournaments allow rebuys even when you have chips left, others do not; you should ask around.