insure

[Origin: 1450. From Middle English 'ensuren', to assure, from Old French 'enseurer', variant of 'assurer']

v.
1. To make sure or secure; as, to insure safety to any one.

2. Specifically, to secure against a loss by a contingent event, on certain stipulated conditions, or at a given rate or premium; to give or to take an insurance on or for; as, a merchant insures his ship or its cargo, or both, against the dangers of the sea; goods and buildings are insured against fire or water; persons are insured against sickness, accident, or death; and sometimes hazardous debts are insured.

3. Ensure.