The crossword solution for the term 'Singsong Syllable' is TRA, which is a three-letter word. TRA is an abbreviation of the Latin word 'tralatitious, ' which means 'passed on by oral tradition.' This term is often used to describe a type of singing or chanting that is passed down from generation to generation. It is also used to refer to a single syllable that is repeated in a singsong pattern.