Abrasive Sheet Used for Making Surfaces Smoother
Puzzle 13 of Same Letter at Both Ends Easy Pack
Question is: Abrasive Sheet Used for Making Surfaces Smoother
and the answer is: SANDPAPER
Word Meaning:
SANDPAPER — (uncountable) Strong paper coated with (traditionally) sand or (today) manufactured aluminum oxide, silicon carbide, or other abrasive material, used for smoothing and polishing.
Definitions from Wiktionary.