Glossary Updated April 21, 2025 By Lines.comParlay BankerA parlay bet where bettors can make multiple selections with one of them being a ‘lock’ chosen by the banker of the parly. The rest of the selections are known as ‘non-bankers’. They do not have the same level of certainty. Bettors will place a wager with a banker and non-banker selections. The payoff will be determined by the odds of the non-banker selections.