What does a cashier mean by 'float'?

In a retail context, a "float" refers to the amount of cash a cashier starts with at the beginning of their shift. This cash is used to provide change for customers and is typically a predetermined amount. At the end of the shift, the float should be returned to its original amount, allowing the cashier to account for their transactions accurately. It ensures that the register has enough cash for daily operations while also helping to track sales.