A venture depending on chance
Something risked on an uncertain outcome
To put up as a stake in a game or speculation
To make a bet
Past-Deidre made a wager with me.
I pulled her Sight, so she couldn't tell I was lying, then asked what she'd wager on it.
In 1231, in such a suit, the bishop of London accepts wager of battle (Pollock and Maitland, op. cit.
Nucleus: Wager in Ann.
30; Wager, On Nuclear Division in the Hymenomycetes, Ann.