Coincide partly (7)
I believe the answer is:
overlap
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">coincide partly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for overlap that I've seen before include "Ride" , "Extend on top of" , "bit of a coincidence" , "Partly cover (another object)" , "Put extra cover on" .)