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.