Let go with (4)
I believe the answer is:
spew
'let go with' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for spew that I've seen before include "Casst out in a stream" , "Expel" , "Cast out in a stream, vomit" , "Fetch up" , "Forcibly eject" .)