To bring in the betting is to make the first bet on the first round of a hand (not including blind bets and antes) A player who does this is said to "bring it in " In seven card stud, often the lowest card on the board is forced to bring it in The bet so placed is called the bring-in
When a government or organization brings in a new law or system, they introduce it. The government brought in a controversial law under which it could take any land it wanted. = introduce
earn on some commercial or business transaction; earn as salary or wages; "How much do you make a month in your new job?"; "She earns a lot in her new job"; "this merger brought in lots of money"; "He clears $5,000 each month"
If you bring in someone from outside a team or organization, you invite them to do a job or join in an activity or discussion. The firm decided to bring in a new management team. = call in