Lining of a Cloud
This page is the CodyCross answer for the clue below from Pet Shop, Group 343, Puzzle 4 (Live Plants).
Question is: Lining of a Cloud
and the answer is: SILVER
Word Meaning:
SILVER — (uncountable) A lustrous, white, metallic element, atomic number 47, atomic weight 107.87, symbol Ag.
Definitions from Wiktionary.