1. (noun)caution, cautiousness, carefulness the trait of being cautious; being attentive to possibledanger "a man of caution"
2. (noun)caution, caveat a warning against certain acts "a caveat against unfair practices"
3. (noun)caution, precaution, care, forethought judiciousness in avoiding harm or danger "he exercised caution in opening the door"; "he handled the vase with care"
4. (noun)circumspection, caution the trait of being circumspect and prudent
5. (verb)caution, admonish, monish warn strongly; put on guard