Another theory is that the name derives from Kalighat.[24] Alternatively, the name may have been derived from the Bengali term kilkila (Bengali: কিলকিলা), or "flat area".[25] The name may have its origin in the words khal (Bengali: খাল [ˈkʰal]) meaning "canal", followed by kaṭa (Bengali: কাটা [ˈkaʈa]), which may mean "dug".[26] According to another theory, the area specialised in the production of quicklime or koli chun (Bengali: কলি চুন [ˈkɔliˌtʃun]) and coir or kata (Bengali: কাতা [ˈkata]); hence, it was called Kolikata).[25]