The crossword solution for the term 'BE A SYMBOL' is CLEF. The term CLEF is a musical symbol used to indicate the pitch of written notes. It is placed at the beginning of a staff to indicate the pitch of the notes written on it. The most common clefs are the treble CLEF, bass CLEF, and alto CLEF. The treble CLEF is used for higher pitched instruments such as the violin, while the bass CLEF is used for lower pitched instruments such as the cello. The alto CLEF is used for instruments in the middle range such as the viola.