Whaling weapon (7)
I believe the answer is:
harpoon
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">whaling weapon</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 harpoon that I've seen before include "Whaling weapon" , "whaling equipment" , "Whaler's weapon" , "Anti-whale weapon" , "Whaler's spear" .)