Filed from 2 published puzzles

CISTERN

Set to 2 different clues across 2 published puzzles, most often “Well” — The New York Times, Friday, 25 September 1998.

7 letters

Every clue on record, most used first

Wellonce
The New York Times — Friday, 25 September 1998
Underground reservoironce
The New York Times — Monday, 13 May 1996

Other answers to these clues

ABLY4 letters
ALLIS5 letters
ALLS4 letters
APTLY5 letters
HALE4 letters
IDECLARE8 letters
ILLBE5 letters
INEVER6 letters
ISAY4 letters
LADIDA6 letters
MYOHMY6 letters
PUT3 letters