n. & adj.
--n.
1. a a deep sky-blue colour. b Heraldry blue.
2 poet. the clear sky.
--adj.
1. a of the colour azure. b Heraldry blue.
2 serene, untroubled.
Etymology: ME f. OF asur, azur, f. med.L azzurum, azolum f. Arab. al the + lazaward f. Pers. lazward lapis lazuli