To negotiate a chimney (narrow vertical cave passage) by pushing against the sides with back, feet, hands, etc.
A narrow cleft in a rock face; a narrow vertical cave passage.
A black eye; a shiner.
The smokestack of a steam locomotive.
The glass flue surrounding the flame of an oil lamp.
A vagina.
A vertical tube or hollow column used to emit environmentally polluting gaseous and solid matter (including but not limited to by-products of burning carbon- or hydrocarbon-based fuels); a flue.