Nantoka/비서biseoAdvanced비서 (biseo) is a Korean word meaning “secretary; personal assistant”.Meanings1secretary2personal assistantPart of speechnounHanja祕書Related words비밀secret독서reading도서관library교과서textbook서점bookstore서류document엽서postcard비법secret비결secret변비constipation신비mystery안내서handbookStudy Korean with flashcards →