bank note
noun
1.
a promissory note, payable on demand, issued by an authorized bank and intended to circulate as money.
Also,
banknote
.
Origin
1685-95
British Dictionary definitions for
banknote
banknote
/
ˈbæŋkˌnəʊt
/
noun
1.
a promissory note issued by a central bank, serving as money