Composite Building Material That Hardens Over Time

This page is the CodyCross answer for the clue below from Australia, Group 1008, Puzzle 1 (Geoffrey Gurrumul Yunupingu).

Question is: Composite Building Material That Hardens Over Time

and the answer is: CONCRETE

Word Meaning:

CONCRETE — Real, actual, tangible.

Definitions from Wiktionary.

Composite building material that hardens over time — CodyCross Answer | CodyCross Solutions