Definition of Ticket

What does the term "ticket" mean in the world of sports betting? What is the definition of the term ticket?

In sports betting, a "ticket" is a wager that you make on a sporting event.

If you go to the betting window in Las Vegas and place a bet, you will receive a ticket that shows you:

1) Who you bet on
2) The amount of the wager
3) How much you will win

This is a "ticket".

The term is still used in online wagering, even though a physical ticket isn't actually generated.