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Social Insurance number

noun
🔊/ˌsəʊʃl ɪnˈʃʊərəns nʌmbə(r)/, 🔊/ˌsəʊʃl ɪnˈʃɔːrəns nʌmbə(r)/
🔊/ˌsəʊʃl ɪnˈʃʊrəns nʌmbər/
(abbreviation SIN)
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  1. a number that the Canadian government uses to identify you, and that you use when you fill out official forms, apply for a job, etc.（加拿大政府用于识别身份等的）社会保险号码