Three-legged support (6)
I believe the answer is:
tripod
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">three-legged support</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 tripod that I've seen before include "one appears to have three legs!" , "Three-legged stand as for camera" , "Stand for camera etc" , "Torpid (anag.)" , "Stand on three legs" .)