n. Prudence in regard to danger; wariness, consisting in a careful attention to probable and possible results, and a judicious course of conduct to avoid failure or disaster.n. Anything intended or serving to induce wariness; a warning given either by word of mouth or in any other way; monitory advice.n. Provision or security against something; provident care; precaution.n. In recent Eng. law, a written warning or caveat filed with the registrar of land-titles against dealings with the land without notice to the cautioner, or person who files the warning.n. Security; guaranty; pledge; bail.n. A person who gives security; a surety; a cautioner.n. n. Bond; bill.n. Something to excite alarm or astonishment; something extraordinary: absolutely or with some fanciful addition: as, the way they scattered was a caution to snakes.n. Admonition.To give notice of danger to; warn; exhort to take heed.