rainbow

Pronunciation

• IPA: /ˈreɪnbəʊ/
•  Audio (US)^{help, file}

Noun

Singular rainbow

Plural rainbows

A rainbow

1. The arch of colours in the sky you can see in the rain when the sun is at your back.

   Traditionally, the colours of the rainbow are red, orange, yellow, green, blue, indigo and violet, but in real life, it's actually a continuous spectrum.