Negotiable Instruments Act Article 4

A check is a negotiable instrument signed and issued by the drawer authorizing a financial institution to pay unconditionally on demand a sum certain in money to the order payee or holder.The term "financial institution" in the preceding paragraph means a bank, credit cooperative, farmers' association, or fishermen's association handling checking deposit business upon approval by the Ministry of Finance.
中文原文 票據法第4條
稱支票者,謂發票人簽發一定之金額,委託金融業者於見票時,無條件支付與受款人或執票人之票據。
前項所稱金融業者,係指經財政部核准辦理支票存款業務之銀行、信用合作社、農會及漁會。

English translation for reference only; the Chinese text prevails. Not legal advice.