- a stool on which a pianist sits when playing a piano, esp one whose height is adjustable
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 piano stool
After several minutes he stopped and swung around on the piano-stool.
"Father has been promising me a piano-stool for more than a year," she explained, laughing.
Louis, what has become of that piano-stool we used to have in our library in town?
She sank down upon the piano-stool and let her hands fall upon the keys.The Man From Glengarry
Why do they always screw up the piano-stool at the last moment!Tante
Anne Douglas Sedgwick