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

  • n. the warning signal that begins a period of preparation for an enemy air attack
  • n. the condition in which combat aircraft are airborne and ready for an operation
  • n. the time period during which military and civilian agencies are prepared for an enemy air attack


Sorry, no etymologies found.


    Sorry, no example sentences found.


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