WordWeb Online

1. An arc of coloured light in the sky caused by refraction of the sun's rays by rain
    
2. An illusory hope
   "chasing rainbows"
    
3. An assortment, a varied collection
   "a rainbow of possibilities"

Derived forms: rainbows

Type of: arc, bow, hope, promise

Part of: sky

Encyclopedia: Rainbow, Clifton, Virginia Rainbow, New Zealand Rainbow, California Rainbow Rainbow, CA Rainbow, OR Rainbow, Texas Rainbow, Victoria Rainbow, TX Rainbow, Oregon Rainbow, Placer County, California