Spill (over) (4)
I believe the answer is:
slop
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">spill over</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for slop that I've seen before include "discarded > loose garment" , "Splash" , "Bobby" , "(Of liquid) spill over" , "Spilled liquid" .)