Spread out; reveal (6)
I believe the answer is:
unfold
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">spread out</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">reveal</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that unfold is a type of reveal)</span><br/ ><br/ ></span>
(Other definitions for unfold that I've seen before include "Spread out or become known" , "Spread out or become visible" , "Reveal - clarify" , "'O clouds, - - !' (Blake)" , "Open out or reveal gradually" .)