Meaning

noun a light shade of blue

verb color azure

adjective of a deep somewhat purplish blue color similar to that of a clear October sky

originFrom Middle English asure, from Old French azur, derived from Arabic لَازَوَرْد (lāzaward, “lapis lazuli”), dropping the l as if it were equivalent to the French article l'. The Arabic is from Classical Persian لاجورد (lājward, “lapis lazuli”), from the region of Lajward in Badakhshan. Compare with Italian azzurro and Spanish azul.

Etymology from Wiktionary, CC BY-SA 3.0