The term 'Part of a Violin' can be broken down into two crossword solutions: NECK (4 letters) and PEG (3 letters). The NECK of a violin is the long, curved piece of wood that connects the body of the instrument to the head. It is usually made of maple and is carved to provide a comfortable grip for the player. The PEG is a small cylindrical piece of wood or metal that is inserted into the NECK of the violin and used to adjust the tension of the strings. It is usually made of ebony or rosewood and is held in place by friction.