Wagering p. pr. & vb. n. : of Wager

Wagering a. : Hazarding; pertaining to the act of one who wagers.

Example:
Why do some online casinos allow you to spin on Roulette without Wagering where some?

Taxonomy
bet, outcome, games, Arbitrage betting, bookmakers, wager, casino, the odds, lay bet, Bet exchange, odds, free encyclopedia, investments, Search, casino gambling games, regulation, states, losses.

Defination from the web:
wagering of money or something of material value on an event with an uncertain outcome with the primary intent of winning ... Wagering may take place through parimutuel pools, or bookmakers may take bets personally. ...