Filed from 3 published puzzles

EXAMINES

Set to 3 different clues across 3 published puzzles, most often “Checks” — The New York Times, Sunday, 24 February 2008.

8 letters

Every clue on record, most used first

Checksonce
The New York Times — Sunday, 24 February 2008
With 21-Down, questions in courtonce
The New York Times — Tuesday, 22 August 2006
Studiesonce
The New York Times — Thursday, 16 February 1995

Other answers to these clues

BONESUP7 letters
CURBS5 letters
DENS4 letters
DETERS6 letters
LESSONS7 letters
PREVENTS8 letters
REINS5 letters
REINSIN7 letters
RESTRAINS9 letters
SQUARES7 letters
STEMS5 letters
TABS4 letters