Source : Webster's Revised Unabridged Dictionary (1913)

Tonsorial \Ton*so"ri*al\, a. [L. tonsorius, fr. tonsor a
   shearer, barber, fr. tondere, tonsum, to shear. See
   {Tonsure}.]
   Of or pertaining to a barber, or shaving.

Source : WordNet®

tonsorial
     adj : of or relating to barbers and barbering; "tonsorial work";
           "tonsorial parlor"