Speckle (5)
I believe the answer is:
fleck
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">speckle</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for fleck that I've seen before include "Small patch of colour" , "Speckle" , "Little spot" , "Small patch of colour/light" , "Streak or spot" .)