< English “bank”? Perhaps the tone is transcribed incorrectly.
Analyzability
unanalyzable
Age
Early English Stratum [36]
(1500–1700)
Loanword Information
Borrowed status
5. no evidence for borrowing
Comments
If the form of the word is really bénga with initial high tone, then the word would seem to have regular sound correspondance for other English borrowings (e.g., síngi ‘sink’).