Be an indication of (7)
I believe the answer is:
signify
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">be an indication of</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 signify that I've seen before include "mean" , "Indicate or declare" , "Be an indication of" , "Represent" , "Show" .)