Definition of "smoke signal" in Anglais

Noun

1. 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.

2. A message or sign sent by this method.

3. An indirect message or indication, especially concerning a future event.

4. A type of flare or combustion device sometimes used as a distress signal.