Source : Webster's Revised Unabridged Dictionary (1913)

Bell's palsy \Bell's palsy\
   Paralysis of the facial nerve, producing distortion of one
   side of the face.

Palsy \Pal"sy\, n.; pl. {Palsies}. [OE. palesie, parlesy, OF.
   paralesie, F. paralysie, L. paralysis. See {Paralysis}.]
   (Med.)
   Paralysis, complete or partial. See {Paralysis}. ``One sick
   of the palsy.'' --Mark ii. 3.

   {Bell's palsy}, paralysis of the facial nerve, producing
      distortion of one side of the face; -- so called from Sir
      Charles Bell, an English surgeon who described it.

   {Scrivener's palsy}. See {Writer's cramp}, under {Writer}.

   {Shaking palsy}, paralysis agitans, a disease usually
      occurring in old people, characterized by muscular tremors
      and a peculiar shaking and tottering gait.