Source : Webster's Revised Unabridged Dictionary (1913)

Torticollis \Tor`ti*col"lis\, n. [F. toricolis; L. torquere,
   tortum, to twist + collum the neck.] (Med.)
   See {Wryneck}.

Source : WordNet®

torticollis
     n : an unnatural condition in which the head leans to one side
         because the neck muscles on that side are contracted
         [syn: {wryneck}]