• Bengali Word কেল্লা English definition [Arabic] (noun) a fortified town; a place of security; a stronghold; a fortress. কেল্লাদার [Arabic + Persian] (noun) 1 the commanding officer of a fortress. 2 the governor of a garrison. কেল্লাফতে (noun) the conquest of a fort. কেল্লাফতে করা (verb transitive) capture a fort; (figurative) achieve one’s goal; realize one’s end. কেল্লামাত করা (figurative) be successful in a hard task.