Someone swallowing fire in Bow? (5)
I believe the answer is:
eater
I believe this is a double definition.
'someone swallowing' is the first definition.
(swallow can mean to eat)
'fire in bow?' is the second definition.
('heater' - an electric heater or fire - said with the 'H' dropped - a cockney accent.)
(Other definitions for eater that I've seen before include "Consumer of food" , "diner" , "Fruit (but not a cooker)" , "type of fruit" , "Type of apple" .)