Definition of "smoker"

smoker

/ˈsmoʊkɚ/

noun
plural smokers
1. A person who smokes tobacco habitually.
  Quotations
  Even though I don't smoke, I'm not one of those fanatics you run into. In fact, I love watching cigarette smokers in their sad little sealed-off areas, sucking away, deep lines in their faces, precancerous lesions taking hold, the posture and body language of petty criminals. You know what you do with these people? Give 'em free cigarettes. Let 'em smoke. Offer them a light!
  1997, George Carlin, Brain Droppings‎, New York: Hyperion Books, page 47
2. A smoking car on a train.
  Quotations
  We had all got into a first-class smoker, and he had already lit the short and charred old briar pipe which seemed to singe the end of his long, aggressive nose.
  1913, Arthur Conan Doyle, “(please specify the page)”, in The Poison Belt […], London; New York, N.Y.: Hodder and Stoughton
3. (informal, dated) An informal social gathering for men only, at which smoking tobacco is allowed.
  Quotations
  That evening A Company had a "smoker" in one of the disused huts of Shorncliffe Camp.
  Strand Magazine
  Yes we're gonna have a wingding / A summer smoker underground
  1982, Donald Fagen (lyrics and music), “New Frontier”, in The Nightfly
4. (informal, dated, UK, Cambridge University) A social event featuring sketches, songs, etc., whether or not smoking is carried out.
  Quotations
  All grins and tuxes at some charity smoker in a city-centre hotel.
  2022, Liam McIlvanney, The Heretic, page 129
5. A vent in the deep ocean floor from which a plume of superheated seawater, rich in minerals, erupts.
6. (slang) 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. (slang) A two-stroke engine.
10. (slang, by extension) Any vehicle with a two-stroke engine, especially a motorcycle, as opposed to a four-stroke motorcycle or stroker.
11. (baseball, informal) A fastball.
12. (slang) Synonym of stag film