Definition of "danger-signal" []

• A signal used to indicate some danger to be avoided. (noun)

The Century Dictionary (Public Domain)

• "Their relations to each other — not long ago an inexhaustible topic — would not bear spoken comment; both were too conscious of the danger-signal when they looked that way."
• "Christopher's attention was fixed on a distant speck that might be a danger-signal and he did not answer her or notice the nearer signal of danger in her white face."
• "Mumbling with protruded lips is an appeal for pity and affection; a coughing grunt denotes indignation; surprise is expressed by a very peculiar, _sotto voce_ guttural; _crescendo_ the same sound is a danger-signal which the little Capuchin-monkey of the"