Definition of hyacinth
1 a
:a precious stone of the ancients sometimes held to be the sapphire
b
:a gem zircon or hessonite
2 a
:a plant of the ancients held to be a lily, iris, larkspur, or gladiolus
b
:a bulbous perennial herb (Hyacinthus orientalis) of the lily family that is native to the Mediterranean region but is widely grown for its dense spikes of fragrant flowers — compare grape hyacinth, water hyacinth
3
:a light violet to moderate purple
