Raid, incursion (6)
I believe the answer is:
inroad
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">raid</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(inroad can mean a raid or attack)</span><br/ ><br/ >'<span class="explanation-format__original">incursion</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(inroad is a kind of incursion)</span><br/ ><br/ ></span>
(Other definitions for inroad that I've seen before include "Encroachment; hostile attack" , "Ordain (anag.)" , "One's intrusive" , "Incursion, raid" , "Sudden attack made into a country" .)