Definitions of rainbow:
  • noun:   an illusory hope
    Example: "Chasing rainbows"
  • noun:   an arc of colored light in the sky caused by refraction of the sun's rays by rain
  • name:  A surname (very rare: popularity rank in the U.S.: #49862)

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Book See rainbow used in context: 393+ rhymes, 3 Shakespeare works, several books and articles.

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