Jactation

from WordNet (r) 3.0 (2006)

jactation
    n 1: (pathology) extremely restless tossing and twitching
         usually by a person with a severe illness [syn:
         {jactitation}, {jactation}]

from The Collaborative International Dictionary of English v.0.48

Jactation \Jac*ta"tion\ (j[a^]k*t[=a]"sh[u^]n), n. [L. jactatio,
   fr. jactare: af. F. jactation. See {Jactancy}.]
   A throwing or tossing of the body; a shaking or agitation.
   --Sir. W. Temple.
   [1913 Webster]