hy·a·cin·thine \|hīə|sin(t)thə̇n, -nˌthīn\adjective Etymology: Latin hyacinthinus, from Greek hyakinthinos, from hyakinthos hyacinth + -inos -ine 1.: having any one of the four colors hyacinth, hyacinth blue, hyacinth violet, or hyacinth red 2. a.: of, relating to, or resembling the hyacinth < his hyacinthine locks descend in wavy curls — Alexander Pope > b.: adorned or decorated with hyacinths < with hyacinthine chaplet crowned — Francis Fawkes >