Meaning

noun any of various plants of the genus Syringa having large panicles of usually fragrant flowers

adjective of a pale purple color

originEtymology tree Proto-Indo-European *neyH-der.? Sanskrit नील॑ (nī́la)der. Middle Persian 𐭭𐭩𐭫 (nīl) Classical Persian نِیل (nīl) Middle Persian 𐭪 (k /⁠-ak⁠/) Classical Persian ـَک (-ak) Classical Persian لِیلَک (līlak)bor. Arabic لِيلَك (līlak)bor. French lilacbor. English lilac From obsolete French lilac (now lilas), from Arabic لِيلَك (līlak).

Etymology from Wiktionary, CC BY-SA 3.0