Have within (7)
I believe the answer is:
contain
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">have within</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for contain that I've seen before include "Carry" , "Keep within limits or have within" , "Keep the lid on" , "Hold within, suppress (7)" , "Control, restrain" .)