rainbow

n. colorful arc seen in the sky after a rainstorm (caused by sunlight shining through water droplets suspended in the air)

Rainbows are optical and meteorological phenomena that cause a spectrum of light to appear in the sky when the Sun shines onto droplets of moisture in the Earth's atmosphere. They take the form of a multicoloured arc, with red on the outer part of the arch and violet on the inner section of the arch. More rarely, a secondary rainbow is seen, which is a second, fainter arc, outside the primary arc, with colours in the opposite order, that is, with violet on the outside and red on the inside.
See more at Wikipedia.org...

Rainbow is an album by Ayumi Hamasaki. It was released on December 18, 2002. This album featured more music producing from DAI (of Do As Infinity) and Crea (Hamasaki's producer pen name). Since Loveppears, this album is the first studio album from her that did not break the two million mark. The single "Free & Easy" lost out the top daily spot to Kuraki Mai's "Feel Fine!", but eventually took the top position for the week. However, the single "H" is the only single that broke the million mark in Japan in 2002. The hidden track "+" begins where the song "independent" abruptly ends.
See more at Wikipedia.org...

Noun
1. an arc of colored light in the sky caused by refraction of the sun's rays by rain
(hypernym) bow, arc
(part-holonym) sky
2. an illusory hope; "chasing rainbows"
(hypernym) promise, hope

(n.)
A bow or arch exhibiting, in concentric bands, the several colors of the spectrum, and formed in the part of the hemisphere opposite to the sun by the refraction and reflection of the sun's rays in drops of falling rain.
  

[Judaic] God gave the rainbow to the world as a sign of his promise that he would graciously never again destroy the world (Gen. 9). When Moses ascended Mount Sinai, the rainbow took off its garment and gave it to him to protect him as he interacted with God (Zohar 2:99a). Elijah will test the righteousness of individuals by asking if they have ever seen a rainbow; because the truly pious sustain the world on his, or her, own merit such a person never actually sees one. A particularly splendid rainbow will herald of the Messiah.