What is the meaning of Wryneck?

Either of two small woodpeckers, Jynx torquilla and Jynx ruficollis, of the Old World, that turn their heads almost 180 degrees when foraging.

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; torticollis.

Source: wiktionary.org