Bank note \Bank" note`\

1. A promissory note issued by a bank or banking company, payable to bearer on demand.

Note: In the United States popularly called a bank bill.

2. Formerly, a promissory note made by a banker, or banking company, payable to a specified person at a fixed date; a bank bill. See Bank bill, 2. [Obs.]

3. A promissory note payable at a bank.

Source: Webster's Revised Unabridged Dictionary (1913)