Green’s Dictionary of Slang

(Ling. Fr./Polari) good night.

1909

J. Ware Passing Eng. of the Victorian Era 41/2: Boner Nochy (Clerkenwell; Italian quarter). Good-night – imitated by the Clerkenwellians, from the bona notte of the Italians in Eyre Street Hill, Little Bath Street, and Hatton Garden; or it may be from the Spanish ‘noche’ – through the U.S.A.