Meaning

noun a red transparent variety of zircon used as a gemstone

noun any of numerous bulbous perennial herbs

originFrom Middle English jacinth, partly from Old French jacincte, from Medieval Latin jacintus, and partly from Old English iacinþ, from Medieval Latin jacinthus, both from Latin hyacinthus, from Ancient Greek ὑάκινθος (huákinthos, “any of several dark blue flowers”), ultimately from a non-Indo-European Mediterranean language. Re-Latinized in the 16th century.

Etymology from Wiktionary, CC BY-SA 3.0