Cries as lumbang-oil emptied into vessel (7)
I believe the answer is:
squalls
'cries' is the definition.
'as lumbang-oil emptied into vessel' is the wordplay.
I cannot really see how this works, but
'as' could be 'qua' (I've seen this before) and 'qua' is found in the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for squalls that I've seen before include "Sudden violent winds" , "Yells" , "Blustery winds" .)