Leaf on the end of twig oozing (7)
I believe the answer is:
seepage
'oozing' is the definition.
(synonyms)
'leaf on the end of twig' is the wordplay.
'leaf' becomes 'page' (page is a kind of leaf).
'on' means one lot of letters go next to another.
'the end of twig' becomes 'see' (I can't justify this - if you can you should believe this answer much more).
'page' put after 'see' is 'SEEPAGE'.
Can you help me to learn more?
(Other definitions for seepage that I've seen before include "Slow leaking flow" , "Ooze" , "liquid having soaked through" , "Slow leakage" , "problem with tank" .)