—n.
1 attention to safety; prudence, carefulness.
2 a esp. Brit. a warning, esp. a formal one in law. b a formal warning and reprimand.
3 colloq. an amusing or surprising person or thing.
—v.tr.
1 (often foll. by against, or to + infin.) warn or admonish.
2 esp. Brit. issue a caution to.
Phrases and idioms:
caution money Brit. a sum deposited as security for good conduct.
Etymology: ME f. OF f. L cautio -onis f. cavere caut- take heed
Useful english dictionary. 2012.