bank note bank·note uncommon noun 1. a piece of paper money (especially one issued by a central bank) “he peeled off five one-thousand-zloty notes” Synonymsbillnotegovernment notebank billbanker's billbank notebanknoteFederal Reserve notegreenback Related words Broader terms paper money Narrower terms silver certificatehundred dollar billfifty dollar billtwenty dollar billtennerfivertwo dollar billdollar WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.