Collins Concise English Dictionary © HarperCollins Publishers::

caution /ˈkɔːʃən/ n
  1. care, forethought, or prudence, esp in the face of danger; wariness
  2. something intended or serving as a warning; admonition
  3. chiefly Brit a formal warning given to a person suspected or accused of an offence that his words will be taken down and may be used in evidence
  4. informal an amusing or surprising person or thing
  1. (transitive) to urge or warn (a person) to be careful
  2. (transitive) chiefly Brit to give a caution to (a person)
  3. (intransitive) to warn, urge, or advise: he cautioned against optimism
Etymology: 13th Century: from Old French, from Latin cautiō, from cavēre to beware

'caution' also found in these entries:
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