rainbow rainbound • rainbowlike · · · Info · Definitions · Characters · · rainbow · · Text Latin · · Script 7 · · Length Definitions · · · (noun) an arc of colored light in the sky caused by refraction of the sun's rays by rain. · · Noun Definition 1 (noun) an illusory hope. Example: "Chasing rainbows." · · Noun Definition 2 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 w latin small letter w U+0077