D defs.my
Entry 2 senses Webster, 1913

Ephippium

· E·phip·pi·um · IPA
01 n. A depression in the sphenoid bone; the pituitary fossa.
  1. 1.
    A depression in the sphenoid bone; the pituitary fossa.(Anat.)
  2. 2.
    A saddle-shaped cavity to contain the winter eggs, situated on the back of Cladocera.(Zoöl.)