side bet

noun

1. a bet made, as with another player, in addition to one's principal bet:

   a side bet as to which of us would draw the highest card.

Word History and Origins

Origin of side bet¹

First recorded in 1890–95

Example Sentences

The bank also made a side bet on California wineries.

From New York Times

With his other hand he pointed at each man wanting a side bet.

From Salon

The Texas crew was back on the first tee watching all this, and when an envoy from Colorado came back to see if they would be willing to talk terms about the side bet, they just laughed.

From Golf Digest

Officially known as a "proposition bet" or a side bet, prop bets are placed either before or during a game.

From Fox News

Officially known as a "proposition bet" or a side bet, prop bets are placed either before or during a game and usually are not correlated to the outcome of the game.

From Fox News