Webster's Revised Unabridged Dictionary · 1913

Bet

Bet ({not transcribed}) , noun

[Probably from Old English abet abetting, Old French abet, from 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.
Having made his bets. — Goldsmith

Bet ({not transcribed}) , transitive verb

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. — Shakespeare
I'll bet you two to one I'll make him do it. — O. W. Holmes

Bet , imperfect and past participle

imp. & past participle of Beat. [Obsolete]

Bet , adjective and adverb

An early form of Better. [Obsolete]
Collocations (1)
To go bet , to go fast; to hurry. [Obsolete] — Chaucer