From The Collaborative International Dictionary of English v.0.48:
Bet \Bet\, n. [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. "Having made his
bets." --Goldsmith.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Bet \Bet\, v. t. [imp. & p. p. Bet, Betted; p. pr. & vb. n.
Betting.]
To stake or pledge upon the event of a contingent issue; to
wager.
[1913 Webster]
John a Gaunt loved him well, and betted much money on
his head. --Shak.
[1913 Webster]
I'll bet you two to one I'll make him do it. --O. W.
Holmes.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Bet \Bet\, v. t. [imp. & p. p. Bet, Betted; p. pr. & vb. n.
Betting.]
To stake or pledge upon the event of a contingent issue; to
wager.
[1913 Webster]
John a Gaunt loved him well, and betted much money on
his head. --Shak.
[1913 Webster]
I'll bet you two to one I'll make him do it. --O. W.
Holmes.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Bet \Bet\,
imp. & p. p. of Beat. [Obs.]
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From The Collaborative International Dictionary of English v.0.48:
Bet \Bet\, a. & adv.
An early form of Better. [Obs.]
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To go bet, to go fast; to hurry. [Obs.] --Chaucer.
[1913 Webster]