From Longman Dictionary of Contemporary Englishrainbowrain‧bow /ˈreɪnbəʊ $ -boʊ/ ●●○ noun [countable] DNa large curve of different colours that can appear in the sky when there is both sun and rain
Examples from the Corpus
rainbow• You could fan them out, and a rainbow of colors appeared.• Largemouth bass, yellow bass, channel catfish and rainbow trout accounted for about 5 percent of the total.• It is seen in the form of the sun and the full moon, halo and rainbow.• This time I was making hot pants and rainbow striped jumpers.• He had never seen anything like the night rainbow.• This is no rainbow, but a man.• Fourth and finally, I climbed a short rainbow to the surface of the pond.• The last component of the rainbow coalition that I want to refer to is feminism. 