Sedimentary rock (9)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sedimentary rock</span>' is the definition.<br/ ><span class="explanation-format__explanation">(limestone is a kind of sedimentary rock)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for limestone that I've seen before include "Rock of calcium carbonate" , "Hard calcium rock" , "Mineral" , "building material" , "Caves in here perhaps" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sedimentary rock</span>' is the definition.<br/ ><span class="explanation-format__explanation">(sandstone is a kind of sedimentary rock)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sandstone that I've seen before include "Among the best of building materials" , "Such building material" , "Rock containing quartz grains" , "Type of sedimentary rock" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sedimentary rock</span>' is the definition.<br/ ><span class="explanation-format__explanation">(shale is a kind of sedimentary rock)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for shale that I've seen before include "Fine pieces of stone on leash" , "Soft rock; heals (anag.)" , "Oil-rich rock" , "Type of soft rock" , "Easily split layered rock" .)