Hyăcinthus or -os, i, m., = Ὑάκινθος,
I a beautiful Spartan youth , son of Oebalus , beloved by Apollo , and accidentally killed by a blow of his quoit; from his blood sprang the flower of the same name , marked with the exclamation AI, Ov. M. 10, 162 sq.; Hyg. Fab. 272; Plin. 21, 11, 38, § 66; Serv. Verg. E. 3, 63.— Plur. : sed gladiator erat; facit hoc illos Hyacinthos, i. e. as beautiful as Hyacinthus , Juv. 6, 110.—
B Hyăcinthĭa , ōrum, n., the festival in honor of Hyacinthus , in Sparta, Ov. M. 10, 219.—
II Hence, hyăcinthus or -os , i, m., the hyacinth , not, however, our hyacinth, but either the blue iris or fleur-de-lis , Iris Germanica, Linn.; the corn-flag or gladiolus , Gladiolus communis, Linn.; or the rocket larkspur , Delphinium Ajacis, Linn.; Plin. 21, 11, 38, § 66; Verg. E. 3, 63; 6, 53; id. G. 4, 183; id. A. 11, 69; Col. poët. 10,100.—Hence,
B Transf., f., a precious stone of the color of a hyacinth (perh. our sapphire or a dark-colored amethyst ), Plin. 37, 9, 41, § 125 sq.; Vulg. Exod. 25, 4; Inscr. Orell. 2510.