v.1. To place a wager of some amount on some event: I wagered $10 on the first race of the evening.
2. To place a wager of some amount on some participant in an event: I wagered $10 on the Detroit Tigers.
3. To place a wager or bet on some event: I wagered on the last race of the evening but lost.
4. To place a wager or bet on some participant in an event: I wagered on the Chicago Bears and doubled my money.
5. To expect or feel sure that something will happen: You can wager on Chris being late to the meeting.