The term 'glowing piece' can be broken down into two crossword solutions: ODE and EMBER. ODE is a type of lyric poem, usually written in praise or admiration of something or someone. An EMBER is a glowing, hot coal or wood that is left after a fire has burned out. Together, these two words form the phrase 'glowing piece, ' which can refer to a poem or other work of art that is so beautiful and powerful that it seems to glow with its own light.