The term PART OF EGBDF is an acronym for the notes of the musical scale in treble clef. EVERY note in the musical scale is represented by a letter, with EGBDF representing the notes E, G, B, D, and F. The crossword solutions for this term are 'EVERY' (5 letters) and 'BOY' (3 letters). EVERY is a reference to the fact that EVERY note in the musical scale is represented by a letter, while BOY is a reference to the mnemonic device 'EVERY Good BOY Does Fine' which is used to remember the notes of the musical scale.