Walking on __ idiom for exercising caution

CodyCross logoHere is the CodyCross answer for the clue “Walking on __ idiom for exercising caution”. This 9-letter answer belongs to the Underground Worlds pack (Group 2170, Puzzle 4). If you are stuck on this clue from CodyCross — the themed crossword puzzle game developed by Fanatee — you will find the exact solution below along with every other clue in the same puzzle. Our database is verified by hand and updated daily against the official English version of the game.

Answer
EGGSHELLS
9 letters