EPHIPPIUM

‖E‐phip″pi‐um (?), n. [[L., saddle cloth, fr. Gr. �; επἴ on + ἵπποσ horse.]] 1. 1. (Anat.) A depression in the sphenoid bone; the pituitary fossa.
2. 2. (Zoöl.) A saddle-shaped cavity to contain the winter eggs, situated on the back of Cladocera.