Sharply defined (5-3)
I believe the answer is:
clear-cut
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sharply defined</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 clear-cut that I've seen before include "Cruel act (anag)" , "Distinct and sharply-defined" , "Well defined" , "Decisive" , "Syrian city" .)