Smoke-duct (4)
I believe the answer is:
flue
(Other definitions for flue that I've seen before include "Small chimney" , "Chimney shaft" , "Tube" , "Chimney vent" , "Outlet for smoke or gas" .)
I believe the answer is:
flue
(Other definitions for flue that I've seen before include "Small chimney" , "Chimney shaft" , "Tube" , "Chimney vent" , "Outlet for smoke or gas" .)