Enter a clue or pattern or both:
The Clue
Roughens with an abrasive (7 letter answer)
The Answer
EMERIES
Tags
Notes
The answer EMERIES is so rare that it appears less than once every 2500 puzzles.
Definition
EMERY as a noun:
1. a hard grey-black mineral consisting of corundum and either hematite or magnetite; used as an abrasive (especially as a coating on paper)