|the saucer-shaped bone that forms the back part of the skull and part of its base|
|a chattering or flighty, light-headed person.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
occipital bone n.
A bone at the lower and posterior part of the skull, consisting of basilar, condylar, and squamous parts and enclosing the foramen magnum.