danger signal
A 'danger signal' can be both a literal and figurative indicator of potential hazards or threats, commonly used in safety protocols and various industries.
Definition
B2General
(common)A warning sign indicating the presence of a hazard or potential threat.
Example
- The sudden drop in stock prices was a danger signal for investors.
C1Rail Transport
(technical)A signal showing a red light or other stop indication that a train driver must not pass until it changes or is manually cleared by a dispatcher.
Example
- The train halted immediately upon seeing the danger signal.
B2Figurative
(figurative)An indication or symptom suggesting that a risk or problem may arise.
Example
- Her persistent cough was a danger signal that something was wrong with her health.
Similar
Terms that have similar or relatively close meanings to "danger signal":
warning signwarning bellred flagdanger areadistress signalbad signalarm bellhealth warningred alertcode yellowyellow flagdanger spacestarting signalwarning trackdanger zonedirection indicatorcode redsignalling event