indigo blue noun & adjectival phr. [,ɪndɪgǝʊ 'blu:] E18.[from INDIGO + BLUE noun, adjective.]A. noun phr.1. The violet-blue colour of indigo.
E18.2. =
INDIGOTIN.
M19.b. adjectival phr. Of the blue colour of indigo.
M19. [TahlilGaran] English Dictionary ▲