precaution (
http://definr.com/precaution)
n 1: a precautionary measure warding off impending danger or
damage or injury etc. [syn:
safeguard]
2: the trait of practicing caution in advance
3: judiciousness in avoiding harm or danger; "he exercised
caution in opening the door"; "he handled the vase with
care" [syn:
caution,
care,
forethought]