Trickle (through) (4)
I believe the answer is:
seep
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">trickle through</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 seep that I've seen before include "Come out slowly" , "Trickle through slowly" , "Leak gradually" , "Ooze, percolate" , "Leak slowly, ooze" .)