- a device that may be placed over a wrest pin on a piano, etc, and turned to alter the tension and pitch of a string
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for tuning key
But Czipra began to put the strings of the czimbalom out of tune with her tuning-key.Debts of Honor
"That I could help," said Arnold, as he took his tuning-key out of his pocket.
They had strings of brass wire which were tuned by a key, not very different from the present tuning-key.The Story of Ancient Irish Civilization
P. W. Joyce