Construction material (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">construction material</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for concrete that I've seen before include "Not abstract - construction material" , "Solid, real" , "Actual - stuff made with cement" , "Unsightly building material" , "Substantial, real" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">construction material</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Another definition for masonite that I've seen is " Kind of hardboard made from pressed wood fibres".)