Smoke n.
 1. The visible exhalation, vapor, or substance that escapes, or expelled, from a burning body, especially from burning vegetable matter, as wood, coal, peat, or the like.
 Note: ☞ The gases of hydrocarbons, raised to a red heat or thereabouts, without a mixture of air enough to produce combustion, disengage their carbon in a fine powder, forming smoke. The disengaged carbon when deposited on solid bodies is soot.
 2. That which resembles smoke; a vapor; a mist.
 3. Anything unsubstantial, as idle talk.
 4. The act of smoking, esp. of smoking tobacco; as, to have a smoke. [Colloq.]
 Note: ☞ Smoke is sometimes joined with other word. forming self-explaining compounds; as, smoke-consuming, smoke-dried, smoke-stained, etc.
 Smoke arch, the smoke box of a locomotive.
 Smoke ball Mil., a ball or case containing a composition which, when it burns, sends forth thick smoke.
 Smoke black, lampblack. [Obs.]
 Smoke board, a board suspended before a fireplace to prevent the smoke from coming out into the room.
 Smoke box, a chamber in a boiler, where the smoke, etc., from the furnace is collected before going out at the chimney.
 Smoke sail Naut., a small sail in the lee of the galley stovepipe, to prevent the smoke from annoying people on deck.
 Smoke tree Bot., a shrub (Rhus Cotinus) in which the flowers are mostly abortive and the panicles transformed into tangles of plumose pedicels looking like wreaths of smoke.
 To end in smoke, to burned; hence, to be destroyed or ruined; figuratively, to come to nothing.
 Syn: -- Fume; reek; vapor.