Answer: sunbow

AnswerCrossword Clue
SUNBOWWaterfall phenomenon
SUNBOWColors in a water spray
SUNBOWArc seen in waterfalls
SUNBOWIris: Poet.
SUNBOWWater-light phenomenon
SUNBOWWaterfall effect
sunbowbow or arc of prismatic colors like a rainbow, appearing in the spray of cataracts, waterfalls, fountains, etc.
sunbowan arc of spectral colours formed by the sun through mist