The Collaborative International Dictionary of English v.0.48:

Palsy \Pal"sy\, v. t. [imp. & p. p. Palsied; p. pr. & vb. n.
   Palsying.]
   To affect with palsy, or as with palsy; to deprive of action
   or energy; to paralyze.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

   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, (Med.) paralysis agitans, a disease usually
      occurring in old people, characterized by muscular tremors
      and a peculiar shaking and tottering gait; now called
      parkinsonism, or Parkinson's disease.
      [1913 Webster +PJC]

WordNet (r) 3.0 (2006):

palsy
    n 1: loss of the ability to move a body part [syn: paralysis,
         palsy]
    2: a condition marked by uncontrollable tremor
    v 1: affect with palsy