Speak volubly in some place out of turn (5)
I believe the answer is:
spout
'speak volubly' is the definition.
(I've seen this in another clue)
'some place out of turn' is the wordplay.
'some place' becomes 'spot' (synonyms).
'out of' means one lot of letters goes inside another (some letters on the outside of others).
'turn' becomes 'U' (a 'U-turn' is a kind of turn).
'spot' placed around 'u' is 'SPOUT'.
'in' acts as a link.
(Other definitions for spout that I've seen before include "Pontificate" , "Discharge" , "Mouth of a kettle" , "rant" , "Make speech; part of teapot" .)