Definitions

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

  • noun Alert watchfulness.

from The Century Dictionary.

  • noun Wakefulness.
  • noun The state or character of being vigilant; watchfulness in discovering or guarding against danger, or in providing for safety; circumspection; caution.
  • noun Specifically, watchfulness during the hours of night.
  • noun In medicine, a form of insomnia.
  • noun A guard or watch.

from the GNU version of the Collaborative International Dictionary of English.

  • noun The quality or state of being vigilant; forbearance of sleep; wakefulness.
  • noun Watchfulness in respect of danger; care; caution; circumspection.
  • noun obsolete Guard; watch.
  • noun a volunteer committee of citizens for the oversight and protection of any interest, esp. one organized for the summary suppression and punishment of crime, as when the processes of law appear inadequate.

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

  • noun Alert watchfulness.
  • noun Close and continuous attention.

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

  • noun the process of paying close and continuous attention
  • noun vigilant attentiveness

Etymologies

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