Bellows, lion-style (5)
I believe the answer is:
roars
'bellows lion-style' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for roars that I've seen before include "Sounds like a lion" , "Deep bellows" , "'Deep, bellowing bursts of sound (5)'" , "Bellows, hollers" , "Calls like lion" .)