betn.[Prob. from OE. abet abetting, OF. abet, fr. abeter to excite, incite. See Abet.] That which is laid, staked, or pledged, as between two parties, upon the event of a contest or any contingent issue; the act of giving such a pledge; a wager.(Goldsmith.)v. t. To stake or pledge upon the event of a contingent issue; to wager.()John a Gaunt loved him well, and betted much money on his head. (Shak.)I'll bet you two to one I'll make him do it. (O. W. Holmes.) imp. & p. p. of Beat.()a. & adv. An early form of Better.()To go bet, to go fast; to hurry. [Obs.] Chaucer.()