From Wiktionary, the free dictionary
Inherited from Old Marathi 𑘡𑘎𑘻 (nako), probably from Sanskrit न (na) + खलु (khalu).
नको • (nako)
- don't, not wanted
- घरात धाऊ नको! ― gharāt dhāū nako! ― Don't run in the house!
- Berntsen, Maxine (1982–1983) “नको”, in A Basic Marathi-English Dictionary, New Delhi: American Institute of Indian Studies