Trygon
Pronunciation : Try"gon (tri"g?n) n.
Etymology : [L., a sting ray, from Gr. (Zo?l.)
Definition : Defn: Any one of several species of large sting rays belonging to Trygon and allied genera.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder