alarm call

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Also see: call

Concise Oxford English Dictionary © 2008 Oxford University Press:
alarm/əˈlɑːm/

▶noun

• 1 anxious or frightened awareness of danger.

  ■ a warning of danger.

• 2 a warning sound or device.

▶verb

• 1 frighten or disturb.

• 2 (be alarmed) be fitted or protected with an alarm.

– derivatives
alarming adjective,
alarmingly adverb.

– origin ME (as exclam. meaning ‘to arms!’): from OFr. alarme, from Ital. allarme, from all' arme!