The term 'Tuning Fork Part' is composed of two crossword solutions, 'TINE' and 'PRONG'. A TINE is a thin metal spike or rod that is part of a tuning fork. It is the part of the tuning fork that vibrates when struck, producing sound waves. A PRONG is a curved or pointed piece of metal that is also part of a tuning fork. It is the part of the tuning fork that is struck to produce sound waves. Together, the TINE and PRONG make up the tuning fork part.