What does ～冊 mean?
～冊 is a Japanese counter meaning “counter for books” in English. It is written as ～冊 in kanji, ～さつ in hiragana, and ～satsu in romaji. This word is part of JLPT N5 vocabulary.
Example sentences
本を三冊買いました。
I bought three books.
図書館で雑誌を二冊借りました。
I borrowed two magazines from the library.