TREADLE

Set to 4 different clues across 5 published puzzles, most often “Potter's pedal” — The New York Times, Wednesday, 17 February 2010.

7 letters

Every clue on record, most used first

Potter's pedal2 times
The New York Times — Wednesday, 17 February 2010
It may be worked by a tailoronce
The New York Times — Saturday, 27 September 2003
It requires footworkonce
The New York Times — Saturday, 13 May 2000
Part of a spinning wheelonce
The New York Times — Thursday, 15 July 1999