[? f. Sp. azul blue + -INE; cf. azurine.] A particular shade of blue.
1864. G. Gladstone, in Reader, 8 Oct., 450/3. Solutions of chromium salts … litmus, azuline.
1883. M. Haweis, in Contemp. Rev., 423. The difficulties of future antiquaries will be as great as ours if they try to discover what shades of colour were known by such names as feu d’enfer, eau de Nil, Magenta, Alexandra blue, azuline, and a hundred others.
