Source : Webster's Revised Unabridged Dictionary (1913)

Platyrhini \Plat`y*rhi"ni\, n. pl. [NL., fr. Gr. ? broad + ?, ?,
   nose.] (Zo["o]l.)
   A division of monkeys, including the American species, which
   have a broad nasal septum, thirty-six teeth, and usually a
   prehensile tail. See {Monkey}. [Written also {Platyrrhini}.]