Where does “春本” come from?

春本 (Japanese) comes from Japanese 春, from Middle Chinese 春.

春本 (Japanese): pornographic book

Definitions

  1. pornographic book

Ancestry of “春本”, step by step

春本 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesespring
2Middle Chinese

via Japanese

StepLanguageWordMeaning
1JapaneseAlternative form of 元; a book; a script; a...
Every word from Middle Chinese Every word from Japanese
春本 — Etymology, Origin & Word History | Etymology Explorer