Source : Webster's Revised Unabridged Dictionary (1913)

Mow \Mow\, v. [pres. sing. {Mow}, pl. {Mowe}, {Mowen}, {Moun}.]
   [AS. magan. See {May}, v.]
   May; can. ``Thou mow now escapen.'' [Obs.] --Chaucer.

         Our walles mowe not make hem resistence. --Chaucer.