danger signal (English, noun)
expansion: danger signal (plural danger signals)
Senses:
topics: rail-transport
railways
transport
glosses: A signal set at danger and showing a red light or other stop indication, which a train driver must not pass until it changes or until manually cleared past the signal by a dispatcher.
glosses: An indication that a potentially bad or dangerous situation could develop.
tags: also
figuratively
Forms:
form: danger signals
tags: plural
form: danger-signal
tags: alternative