- hyacinth, jacinth - a red transparent variety of zircon used as a gemstone
--1 is a kind of zircon, zirconium silicate
- hyacinth - any of numerous bulbous perennial herbs
--2 is a kind of liliaceous plant
--2 is a member of genus Hyacinthus
--2 has particulars:common hyacinth, Hyacinthus orientalis; Roman hyacinth, Hyacinthus orientalis albulus; summer hyacinth, cape hyacinth, Hyacinthus candicans, Galtonia candicans