Smokestack (6)
'smokestack' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for chimney that I've seen before include "Smoker on the roof?" , "Smoke outlet" , "Father Christmas's entry?" , "funnel" , "Smoke pipe; rock cleft" .)
'smokestack' is the definition.
(funnel is a kind of smokestack)
This is all the clue.
(Other definitions for funnel that I've seen before include "Passage for escape of smoke" , "Pipe for pouring liquids into small openings" , "Tube with a cone-shaped opening" , "Smokestack on ship" , "Conical utensil with narrow and wide ends" .)