Meaning of word 书脑
Writing Sheet
Word
Pinyin shū nǎo
Phonetic Notation ㄕㄨ ㄣㄠˇ
word Meaning

◎ 书脑 shūnǎo

[outer margin of a book page] 线装书打眼穿线部分;精装书串线订口处

书眼要细,打得正而小,又须少,多则伤书脑。——《藏书纪要》