1. noun /æzˈjʊə,ˈæʒə,ˈæʒɚ,ˈeɪʒɚ/
a) A blue colour on a coat of arms, represented in engraving by horizontal parallel lines.
In Bb [Glovers Roll], the conventional letter B is used to indicate azure in most items.
b) The clear blue colour of the sky; also, a pigment or dye of this colour.
2. adjective /æzˈjʊə,ˈæʒə,ˈæʒɚ,ˈeɪʒɚ/
b) In blazon, of the colour blue.
3. verb /æzˈjʊə,ˈæʒə,ˈæʒɚ,ˈeɪʒɚ/
To colour blue.
Wikipedia foundation.