Rust Away
This page is the CodyCross answer for the clue below from Small World, Group 681, Puzzle 4 (Russian Dolls).
Question is: Rust Away
and the answer is: CORRODE
Word Meaning:
CORRODE — (transitive) To eat away bit by bit; to wear away or diminish by gradually separating or destroying small particles of, as by action of a strong acid or a caustic alkali.
Definitions from Wiktionary.