Axe; helicopter (7)
I believe the answer is:
chopper
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">axe</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">helicopter</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for chopper that I've seen before include "that comes down on the block?" , "An informal helicopter, or an axe" , "Blade" , "that's used by a lumberjack" , "Small axe" .)