noun
reading with mind, mouth, and eyes; thorough reading using three faculties
A yojijukugo describing the ideal of fully engaging with a book by using one's mind (to think), mouth (to recite), and eyes (to see). Often cited as a traditional Chinese reading method.
読書三到とは、心と口と目を同時に使って本を読むことだ。
Dokusho-santō means reading a book using your mind, mouth, and eyes all at once.
From the Chinese phrase 讀書三到 (dúshū sāndào), literally 'reading three arrivals', referring to the three faculties of mind, mouth, and eyes that should be engaged when reading.