Webster's Revised Unabridged Dictionary · 1913

Mot

Mot (mōt) , verb

[See Must, v.]

May; must; might. [Obsolete]
He moot as well say one word as another — Chaucer
The wordes mote be cousin to the deed. — Chaucer
Men moot [i.e., one only] give silver to the poore freres. — Chaucer
Collocations (1)
So mote it be , so be it; amen; -- a phrase in some rituals, as that of the Freemasons.

Mot (mot; mo, def. 2) , noun

[F. See Motto.]

1.
A word; hence, a motto; a device. [Obsolete] — Bp. Hall
Tarquin's eye may read the mot afar. — Shakespeare
2.
A pithy or witty saying; a witticism. [A Gallicism]
Here and there turns up a... savage mot. — N. Brit. Rev
3.
A note or brief strain on a bugle. — Sir W. Scott