INSU'RE, verb transitive inshu're. [in and sure.] To make sure or secure; to contract or covenant for a consideration to secure a person against loss; or to engage to indemnify another for the loss of any specified property, at a certain stipulated rate per cent, called a premium. The property usually insured is such as is exposed to extraordinary hazard. Thus the merchant insures his ship or its cargo, or both, against the dangers of the sea; houses are insured against fire; sometimes hazardous debts ar insured, and sometimes lives. INSU'RE, verb intransitive To underwrite; to practice making insurance. This company insures at 3 per cent, or at a low premium.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI