wryneck Definition

either of two Old World woodpeckers (Jynx torquilla or J. ruficollis) that differ from the typical woodpeckers in having soft tail feathers and a peculiar manner of writhing the neck

torticollis

an acute or chronic often painful condition characterized by involuntary intermittent or sustained contraction of the muscles of the neck (such as the sternocleidomastoid or trapezius) that causes the head to tilt or turn sideways, bend forward or backward, or jerk abnormally —called also wryneck