• Bengali Word কিতাব, কেতাব English definition [Arabic] (noun) a book. কিতাব কোনার (noun) religious scriptures, evidential documents, etc. কেতাবি (adjective) 1 books; bookish: কেতাবি বিদ্যা. 2 (people) professing revealed religious, ie the Jews, the Christians and the Muslims.