smoke signal noun 4smoke-signal verb 2forms 4 noun4 •A method of long-distance communication sometimes used in ancient and undeveloped societies, consisting of messages conveyed by means of columns or intermittent puffs of smoke. •A message or sign sent by this method."I have seen the first of the smoke signals, Gulunna," he said, "Chief Bulla's tribes are on their way." — 1944 •An indirect message or indication, especially concerning a future event. •A type of flare or combustion device sometimes used as a distress signal. smoke-signal verb2 •To use smoke signals. •To inform or indicate by smoke signal.‘His approach was smoke-signalled, the leper collected his mates and they took to the rocks, camping in caves up in the heads of gorges.’ — 1937 formssmoke-signalled · smoke-signalling · smoke-signals · smoke signals