Source : Webster's Revised Unabridged Dictionary (1913)

Shet \Shet\, v. t. & i. [imp. {Shet}. (Obs. {Shette} (? or ?));
   p. pr. {Shet}; p. pr. & vb. n. {Shetting}.]
   To shut. [Obs. or Prov. Eng.] --Chaucer.