a vertical channel or pipe which conducts smoke and combustion gases up from a fire or furnace and typically through the roof of a building

a coal fire thrust yellow flames up the chimney

a factory chimney

a glass tube protecting the flame of a lamp

he trimmed the wick and put the glass chimney over the flame

a very steep narrow cleft by which a rock face may be climbed

he slid fifty feet down a chimney, and became wedged there