Definitions
1.nounA blue colour on a coat of arms, represented in engraving by horizontal parallel lines.
2.nounThe clear blue colour of the sky; also, a pigment or dye of this colour.
3.nounThe unclouded sky; the blue vault above.
4.nounAny of various widely distributed lycaenid butterflies of the genus Celastrina.
5.nounAny of various Australasian lycaenid butterflies of the genus Ogyris.
6.nounLapis lazuli.
7.verbTo colour blue.