rainbow

An arc of spectral colors, usually identified as red, orange, yellow, green, blue, indigo, and violet, that appears in the sky opposite the sun as a result of the refractive dispersion of sunlight in drops of rain or mist.

A similar arc or band, as one produced by a prism or by iridescence.

A graded display of colors.

An illusory hope.

A diverse assortment or collection.

To color like a rainbow, or so brightly as to suggest the rainbow; curve over or surround, as with a rainbow.

A bow, or an arc of a circle, consisting of the prismatic colors, formed by the refraction and reflection of rays of light from drops of rain or vapor, appearing in the part of the heavens opposite to the sun.

In heraldry, the representation of a half-ring divided into seven concentric narrow rings and arched upward, each end resting on a clump of clouds.

In ornithology, a humming-bird of tho genus Diphlogena, containing two most brilliantly plumaged species, D. iris of Bolivia, and D. hesperus of Ecuador.