The crossword solution for the term 'waltz ending' is 'ZEE, ' which is a three-letter word. A waltz is a type of dance that originated in Austria and Germany in the late 18th century. It is usually performed in 3/4 time and is characterized by its strong beat and gliding steps. The ending of a waltz is typically marked by a ZEE, which is a musical notation that indicates the end of a phrase or section.