Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A condition of heightened alertness or preparedness, especially to guard against imminent danger.
  • noun A warning of or signal indicating imminent danger.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • interjection A warning that indicates an emergency situation.
  • interjection A state of readiness to deal with such emergency situation.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the highest level of alert when an attack by the enemy seems imminent (or more generally a state of alert resulting from imminent danger)

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