(1):

(v. t.) To take precaution against.

(2):

(n.) Previous caution or care; caution previously employed to prevent mischief or secure good; as, his life was saved by precaution.

(3):

(n.) A measure taken beforehand to ward off evil or secure good or success; a precautionary act; as, to take precautions against accident.

(4):

(v. t.) To warn or caution beforehand.