Noun

1. A person who smokes tobacco habitually.
2. A smoking car on a train.
3. An informal social gathering for men only.
4. A vent in the deep ocean floor from which a plume of superheated seawater, rich in minerals, erupts.
5. An illicit boxing match; see Battle Royal (boxing).
6. A device that releases smoke intended to distract bees (also more specifically called a bee smoker).
7. An apparatus for smoking food.
8. (Cambridge University) An social event featuring sketches, songs, etc. whether or not smoking is carried out.