Racing toboggan (4)
I believe the answer is:
luge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">racing toboggan</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for luge that I've seen before include "Glue for a one-man sledge" , "Small sleigh" , "Racing sled for one or two people" , "Form of toboggan" , "Glue (anag) - racing toboggan" .)