[n] the trait of being cautious; being attentive to possible danger; "a man of caution"
[n] the trait of being circumspect and prudent
[n] judiciousness in avoiding harm or danger; "he exercised caution in opening the door"; "he handled the vase with care"
[n] a warning against certain acts; "a caveat against unfair practices"
[v] warn strongly; put on guard