Poker glossary
Jack Up
To jack up is to raise. A player jacks up the pot when he increases the bet.
The simple explanation
When you hear that someone 'jacked it up', it means that he raised. The word is slang.
A closer look
The phrase suggests a large raise. It is the same action as kick it or raise. As in any raise, the amount must be clear, and in a no-limit game the dealer will follow the rules of the room about incomplete or string raises.
A practical example
A player bets $10, and another player jacks it up to $40.
Full explanation
To jack up is to raise. A player jacks up the pot when he increases the bet.
To jack up is to raise.
It is informal slang.
It often means a big raise.
State the amount when you raise.