Rainbow noun 1forms 1phrases 3 noun1 •A member of the Rainbow Guides, a Girl Guide movement for younger girls. formsRainbows Phrases with Rainbow chase a rainbowTo pursue something illusory, impractical, or impossible. over the rainbowBeyond one's grasp; impossible to reach or achieve. rainbow babyA baby that is conceived after a miscarriage or other loss of a baby.
