A dark band in the yellow portion of the solar spectrum near the sodium line, caused by the presence of water vapour in the atmosphere, and hence sometimes used in weather predictions.

(informal) Happy, positive things, sometimes with a connotation of unrealistic expectations.

present participle of chase rainbows

(idiomatic) To pursue unrealistic or fanciful goals.

plural of rainbow shot

(basketball) A high arcing shot into the basket.

Extremely happy; thrilled. / The afterlife or the path a soul takes to reach the afterlife. / Beyond one's grasp; impossible to reach or achieve.

Resembling a rainbow.

plural of rainbowfish

Any of the small colourful freshwater fish in the family Melanotaeniidae, native to northern and eastern Australia, New Guinea and Indonesia.