smoker

1. A person who smokes tobacco habitually.
2. A smoking car on a train.
3. An informal social gathering for men only, at which smoking tobacco is allowed.
4. (Cambridge University) A social event featuring sketches, songs, etc., whether or not smoking is carried out.
5. A vent in the deep ocean floor from which a plume of superheated seawater, rich in minerals, erupts.
6. An illicit boxing match; see Wikipedia:Battle Royal (boxing).
7. A device that releases smoke intended to distract bees; a bee smoker.
8. A person or an apparatus that smokes food.
9. A two-stroke engine.
10. (by extension) Any vehicle with a two-stroke engine, especially a motorcycle, as opposed to a four-stroke motorcycle or stroker.
11. A fastball.

noun

A kind of pornographic film produced clandestinely in the early to mid-20th century, typically short and without sound.