(1):

(n.) A guaranty, security, or pledge; assurance.

(2):

(n.) The act of insuring, or assuring, against loss or damage by a contingent event; a contract whereby, for a stipulated consideration, called premium, one party undertakes to indemnify or guarantee another against loss by certain specified risks. Cf. Assurance, n., 6.

(3):

(n.) The premium paid for insuring property or life.

(4):

(n.) The sum for which life or property is insured.