The term SHINE SOURCE can be broken down into two crossword solutions: SUN and SEQUINS. The SUN is a star that is the source of light and heat for the Earth and other planets in the Solar System. It is composed mainly of hydrogen and helium and is the brightest object in the sky. SEQUINS are small, shiny, round pieces of metal or plastic used to decorate clothing and accessories. They are often used to add sparkle and glamour to an outfit.