What is Banker's Note?

Legal Definition
Contracts. In England a distinction is made between bank notes, (q. v.) and bankers' notes. The latter are promissory notes, and resemble bank notes in every respect, except that they are given by persons acting as private bankers. 6 Mod. 29; 3 Chit. Com. Law, 590; 1 Leigh's N. P. 338.
-- Bouviers Law Dictionary
Legal Definition
A commercial instrument resembling a bank-note in every particular except that it is given by a private hanker or unincorporated banking institution.
-- Black's Law Dictionary
Legal Definition
A bank note issued by a private, unincorporated bank.
-- Ballentine's Law Dictionary