Az"ure (?; 277), a. [F. & OSp. azur, Sp. azul, through Ar. from Per. lājaward, or lājuward, lapis lazuli, a blue color, lājawardī, lājuwardī, azure, cerulean, the initial l having been dropped, perhaps by the influence of the Ar. azr-aq azure, blue. Cf. G. lasur, lasurstein, azure color, azure stone, and NL. lapis lazuli.] Sky-blue; resembling the clear blue color of the unclouded sky; cerulean; also, cloudless.

Az"ure, n. 1. The lapis lazuli. [Obs.]

2. The clear blue color of the sky; also, a pigment or dye of this color. "In robes of azure." Wordsworth.

3. The blue vault above; the unclouded sky.

Not like those steps
On heaven's azure.
Milton.

4. (Her.) A blue color, represented in engraving by horizontal parallel lines.

Az"ure, v. t. To color blue.

• (tincture): A blue colour on a coat of arms, represented in engraving by horizontal parallel lines.
       * 1997: In Bb , the conventional letter B is used to indicate azure in most items. — Brault, Early Blazon
  
• The clear blue colour of the sky; also, a pigment or dye of this colour.
       azure colour:   
  
• The blue vault above; the unclouded sky.
  
• The lapis lazuli.
  
• (colour) Sky-blue; resembling the clear blue colour of the unclouded sky; cerulean; also, cloudless.
  
• (tincture): In blazon, of the colour blue.
  
• To colour blue.