Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Insurancecoinsureco‧in‧sure /ˌkəʊɪnˈʃʊə $ ˌkoʊɪnˈʃʊr/ verb [transitive] American English BFIto buy or provide insurance in which the payment is split between two people, or insurance that will only pay for part of the value or cost of something→ See Verb table ldoceonline.com