() a person whose job is to estimate the risks involved in a particular activity or in insuring a particular client and decide how much sb must pay for insurance 保险承保人（估算风险并决定保费的人）
a company or person that agrees to accept all the risks involved in an insurance contract 保险公司；保险商；保险人◆He used to work for Lloyd's, the insurance underwriters. 他曾经为保险公司劳合社工作。