The Japanese noun '二三 (にさん)' is a literary or formal term meaning 'a few' or 'several'. It is often used in written language or formal speech to indicate a small, indefinite number of things. For example: I have a few books「二三の本を持っています」(にさんのほんをもっています). There are a few people in the room「部屋に二三の人がいます」(へやににさんのひとがいます). This word is less common in casual conversation, where 'いくつか (いくつか)' or '少し (すこし)' might be used instead.