danger signal
Noun
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Noun
danger signal (plural danger signals)
- (rail) a signal set at danger and showing a red light, a stop signal which a train driver must not pass until it changes.
- (also figurative) an indication that a potentially bad or dangerous situation could develop.
- (rail) SPAD
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.003