der Schornstein
chimney
A structural device that directs smoke and exhaust gases from a fireplace, stove, or boiler to the outside.
Aus dem Schornstein des alten Hauses stieg dichter Rauch auf.
Thick smoke rose from the chimney of the old house.

chimney
Loading your saved state.
chimney
A structural device that directs smoke and exhaust gases from a fireplace, stove, or boiler to the outside.
Aus dem Schornstein des alten Hauses stieg dichter Rauch auf.
Thick smoke rose from the chimney of the old house.

A closely related and culturally important word is 'der Schornsteinfeger' (chimney sweep). This person cleans chimneys and is traditionally considered a good-luck charm in Germany.
Wenn man einen Schornsteinfeger sieht, soll man schnell einen Knopf anfassen.
When you see a chimney sweep, you're supposed to quickly touch a button.
The figurative meaning for a heavy smoker is used almost exclusively in the fixed expression 'rauchen wie ein Schornstein' (to smoke like a chimney). This is a very common comparison.
Seit er Stress bei der Arbeit hat, raucht er wieder wie ein Schornstein.
Since he has been stressed at work, he has started smoking like a chimney again.
Common verbs in connection with 'Schornstein' (chimney) are 'rauchen' (to smoke) or 'qualmen' (to billow smoke). When it comes to maintenance, you use 'fegen' (to sweep) or 'reinigen' (to clean).
Der Schornstein muss dringend mal wieder gefegt werden.
The chimney urgently needs to be swept again.
deduction / trigger / withdrawal
'der Abzug' and 'der Schornstein' can both help direct smoke, steam, or exhaust gases away. 'der Abzug' is usually a technical device that extracts air or fumes, for example in a kitchen or laboratory. 'der Schornstein' is a fixed part of a building and directs smoke from a fireplace, stove, or boiler outside. They can be confused because both have to do with smoke and exhaust air. In the kitchen above the stove, you usually say 'Abzug'; for a fireplace or stove on a house, you say 'Schornstein'.

Aus dem Schornstein des alten Hauses steigt Rauch auf.
Smoke rises from the chimney of the old house.
Beim Kochen schaltet Max den Abzug ein, damit der Dampf verschwindet.
When cooking, Max turns on the extractor fan so the steam disappears.