Webster's Revised Unabridged Dictionary · 1913

Gamble

Gamble , intransitive verb

[Dim. of game. See 2d Game.]

To play or game for money or other stake.

Gamble , transitive verb

To lose or squander by gaming; -- usually with away.
Bankrupts or sots who have gambled or slept away their estates. — Ames

Gamble , noun

An act of gambling; a transaction or proceeding involving gambling; hence, anything involving similar risk or uncertainty. [Colloquial]