The Collaborative International Dictionary of English v.0.48:
Wryneck \Wry"neck\, n. (Med.)
1. A twisted or distorted neck; a deformity in which the neck
is drawn to one side by a rigid contraction of one of the
muscles of the neck; torticollis.
2. a person suffering from torticollis.
3. (Zool.) Any one of several species of Old World birds of
the genus Jynx or subfamily Jynginae, allied to the
woodpeckers; especially, the common European species
(Jynx torguilla); -- so called from its habit of turning
the neck around in different directions. Called also
cuckoo's mate, snakebird, summer bird, tonguebird,
[1913 Webster +PJC]