Close up, obstruct (7)
I believe the answer is:
occlude
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">close up</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">obstruct</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that obstruct can be written as occlude)</span><br/ ><br/ ></span>
(Other definitions for occlude that I've seen before include "Shut out, obscure" , "Block, obstruct" , "Stop up, obstruct" , "Close up (an orifice or passage)" , "Cut or shut off" .)