Found 2 items, similar to dawn horse.
English → English (WordNet) Definition: dawn horse dawn horse n : earliest horse; extinct primitive dog-sized 4-toed Eocene animal [syn: eohippus]
English → English (gcide) Definition: dawn horse eohippus \eo*hip"pus\ ([=e]`[-o]*h[i^]p"p[u^]s), n. [Gr. 'hw`s dawn + "ipposhorse.] an extinct primitive dog-sized 4-toed Eocene mammal, the earliest horse known in the line of descent of the modern horse. It is classed in the extinct genus Hydracotherium. Called also dawn horse. Syn: dawn horse. [WordNet 1.5 +PJC]