How do you spell Azure

Available Definitions:
1)  a. - Sky-blue; resembling the clear blue color of the unclouded sky; cerulean; also, cloudless.
2)  n. - The lapis lazuli.
3)  n. - The clear blue color of the sky; also, a pigment or dye of this color.
4)  n. - The blue vault above; the unclouded sky.
5)  n. - A blue color, represented in engraving by horizontal parallel lines.
6)  v. t. - To color blue.