bright blue in colour like a cloudless sky 天蓝色的;蔚蓝色的 ■(Heraldry)blue (纹章)蓝色的 [postpositive]a saltire azure. 蓝色X形十字。
noun
[mass noun]a bright blue colour 天蓝色;蔚蓝色 ■(poetic/literary)the clear sky (诗/文)碧空
a small butterfly which is typically blue or purplish, with colour differences between the sexes 琉灰蝶
Celastrina and other genera, family Lycaenidae 琉璃灰蝶属等属,灰蝶科
语源
Middle English (denoting a blue dye): from Old French asur, azur, from medieval Latin azzurum, azolum, from Arabic al 'the' + lāzaward (from Persian lāžward 'lapis lazuli')