cheque guarantee card
noun [ C ] UK (US check guarantee card) uk/ˌtʃek ɡær.ənˈtiː ˌkɑːd/ us/ˌtʃek ɡær.ənˈtiː ˌkɑːrd/ (UK also cheque card)
（证明本人开户银行会支付该支票的）支票保付卡
a small plastic card that you sometimes show when you pay for something by cheque as proof that your bank will pay the money you owe