Meaning

• Something deposited, laid, or hazarded on the event of a contest or an unsettled question; a bet; a stake; a pledge.

• That on which bets are laid; the subject of a bet.

• A contract by which two parties or more agree that a certain sum of money, or other thing, shall be paid or delivered to one of them, on the happening or not happening of an uncertain event.

• An offer to make oath.

Meaning

• To bet something; to put it up as collateral

  "I'd wager my boots on it."

• To suppose; to dare say.

  "I'll wager that Johnson knows something about all this."