Ooze, trickle (4)
I believe the answer is:
seep
This clue is a double definition.
'ooze' is the first definition.
(synonyms)
'trickle' is the second definition.
(I've seen this in another clue)
(Other definitions for seep that I've seen before include "Leak slowly, ooze" , "Flow or leak slowly" , "Of liquid, ooze slowly out" , "Leak gradually" , "Leak through an opening" .)