1. 保险商；承销商
    An underwriter is someone whose job involves agreeing to provide money for a particular activity or to pay for any losses that are made.

2. 核保师（对投保项目进行风险评估并决定保险费率）
    An underwriter is someone whose job is to judge the risks involved in certain activities and decide how much to charge for insurance.

1. a financial institution that sells insurance

    Synonym: insurance companyinsurance firminsurerinsurance underwriter

2. an agent who sells insurance

    Synonym: insurance brokerinsurance agentgeneral agent

3. a banker who deals chiefly in underwriting new securities

    Synonym: investment banker