Chimney or funnel (10)
I believe the answer is:
smokestack
I believe this is a double definition.
'chimney' is the first definition.
(I know that smokestack is a type of chimney)
'funnel' is the second definition.
(I've seen this before)
(Other definitions for smokestack that I've seen before include "Ship's funnel" , "industrial feature" , "chimney" .)