certified check; certified cheque
A check guaranteed by the issuing bank, confirming that the account holder has sufficient funds. Used in financial contexts.
In high-value transactions, a certified check may be required.
小切手 is a general check, while 保証小切手 is specifically a certified check guaranteed by the bank.
銀行小切手 is a cashier's check drawn on the bank's own funds, whereas 保証小切手 is drawn on the customer's account but certified by the bank.
Compound of 保証 (guarantee) and 小切手 (check). The term is a direct calque from English 'certified check'.