Occipital bone Meaning, Definition & Usage

  1. noun a saucer-shaped membrane bone that forms the back of the skull

WordNet

Definitions
  1. (Anat.), the bone which forms the posterior segment of the skull and surrounds the great foramen by which the spinal cord leaves the cranium. In the higher vertebrates it is usually composed of four bones, which become consolidated in the adult.

Webster 1913