rainbow has definitions from the field of religion
1
[ noun ] an arc of colored light in the sky caused by refraction of the sun's rays by rain

Used in print

(Ralph J. Salisbury, "On the Old Santa Fe Trail...)

Then I saw the father 's head slightly turn ; gauche rainbow shapes replaced the poignant ovals of gold .

Related terms

bow sky

2
[ noun ] (religion) an illusory hope

Examples

"chasing rainbows"

Related terms

promise

*