Filed from 2 published puzzles

IMPLANT

Set to 2 different clues across 2 published puzzles, most often “Fix firmly” — The New York Times, Sunday, 4 November 2007.

7 letters

Every clue on record, most used first

Fix firmlyonce
The New York Times — Sunday, 4 November 2007
Nonhuman part of a cyborgonce
The New York Times — Saturday, 11 September 1999

Other answers to these clues

CEMENT6 letters
EMBED5 letters
ETCH4 letters
IMBED5 letters
INGRAIN7 letters
MOOR4 letters
RIVET5 letters