Fruit of the pine tree (4)
I believe the answer is:
cone
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fruit of the pine tree</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for cone that I've seen before include "Volcanic peak" , "Geometric solid - fruit of pine" , "may obstruct lane" , "Hollow object associated with ice cream and motorways" , "Road works marker" .)