Pebbles (6)
I believe the answer is:
stones
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pebbles</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 stones that I've seen before include "Pebbles" , "lots of rock" , "Rocks, gems" , "Balls" , "Cherry pips" .)