Where does “कुकुर” come from?

कुकुर (Rajbanshi) comes from Sanskrit कुक्कुर — a dog; a base man, lowly man.

कुकुर (Rajbanshi): dog

Definitions

Step	Language	Word	Meaning
1	Sanskrit	कुक्कुर	a dog; a base man, lowly man

कुकुर — Etymology, Origin & Word History | Etymology Explorer