noun
1.
a. : a variable color averaging a strong greenish blue that is bluer and duller than grotto or cobalt blue and bluer and lighter than indigo carmine
b. : a strong blue that is greener and stronger than Sèvres and greener, lighter, and stronger than Victoria blue — called also coelin
2. : a stable light greenish blue pigment consisting essentially of oxides of cobalt and tin and used as an artist's color