smoker

noun

1. 1.A person who smokes tobacco habitually.
2. 2.A smoking car on a train.
3. 3.An informal social gathering for men only, at which smoking tobacco is allowed.
4. 4.(Cambridge University) A social event featuring sketches, songs, etc., whether or not smoking is carried out.
5. 5.A vent in the deep ocean floor from which a plume of superheated seawater, rich in minerals, erupts.