no-claims bonus
noun [ C ] UK uk/ˌnəʊ.kleɪmz ˈbəʊ.nəs/ us/ˌnoʊ.kleɪmz ˈboʊ.nəs/ (also no-claims discount)
（尤指汽车保险在某段时期内没有索赔要求而享有的）无索偿折扣，无索赔赠金
an amount by which someone's payment for insurance is reduced, especially for a motor vehicle, because they have not made any claims for a particular period