The Collaborative International Dictionary
solipede
Soliped \Sol"i*ped\, n. [Cf. F. solip[`e]de, It. solipede, Sp. solipedo; apparently fr. L. solus alone + pes, pedis, a foot; but probably fr. L. solidipes solid-footed, whole-hoofed. See Solid, and Pedal.] (Zo["o]l.) A mammal having a single hoof on each foot, as the horses and asses; a solidungulate. [Written also solipede.]
The solipeds, or firm-hoofed animals, as horses, asses,
and mules, etc., -- they are, also, in mighty number.
--Sir T.
Browne.
Wiktionary
solipede
n. (context zoology obsolete English) A mammal having a single hoof on each foot; a solidungulate.