Source : Webster's Revised Unabridged Dictionary (1913)

Soyle \Soyle\, v. t. [Aphetic form of assoil.]
   To solve, to clear up; as, to soyl all other texts. [Obs.]
   --Tyndate.

Soyle \Soyle\, n. [Cf. {Soil} to feed.]
   Prey. [Obs.] --Spenser.