The name Hyacinth means The Flower and is of Greek origin. Hyacinth is a name that's been used primarily by parents who are considering baby names for girls.
From the Greek word hyakinthos. Hyakinthos was the name of a youth loved by Apollo; when he died a flower sprouted from his blood and was named after him. Now more commonly a girl's name. The name may have originally signified a gem, such as the sapphire.