Look-see (4)
I believe the answer is:
peep
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">look-see</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for peep that I've seen before include "Look furtively or voyeuristically" , "Secret look" , "Look secretly" , "Chirp" , "Palindromic glimpse" .)