Pour from side, audibly (4)
I believe the answer is:
teem
'pour' is the definition.
(thesaurus)
'side audibly' is the wordplay.
'side' becomes 'team' (I've seen this before).
'audibly' indicates a 'sounds like' (homophone) clue.
'team' sounds like 'TEEM'.
'from' acts as a link.
(Other definitions for teem that I've seen before include "(Of rain) fall heavily" , "Rain buckets" , "pelt" , "Come down hard" , "Be swarming (with)" .)