資料來源 : Webster's Revised Unabridged Dictionary (1913)

Solidungula \Sol`id*un"gu*la\, n. pl. [NL., from L. solidus
   solid + ungula a hoof.] (Zo["o]l.)
   A tribe of ungulates which includes the horse, ass, and
   related species, constituting the family {Equid[ae]}.