Hard Thick Outer Covering of a Tooth
This page is the CodyCross answer for the clue below from All Things Water, Group 1286, Puzzle 2 (Streams and Swamps).
Question is: Hard Thick Outer Covering of a Tooth
and the answer is: ENAMEL
Word Meaning:
ENAMEL — An opaque, glassy coating baked onto metal or ceramic objects.
Definitions from Wiktionary.