D defs.my
Entry 1 sense Webster, 1913

Pliohippus

· Pli·o·hip·pus · IPA
01 n. An extinct genus of horses from the Pliocene deposits. Each foot had a single toe (or hoof), as in the common horse.
  1. 1.
    An extinct genus of horses from the Pliocene deposits. Each foot had a single toe (or hoof), as in the common horse.(Paleon.)