Where does “床虱” come from?

床虱 (Japanese) comes from Japanese 床, from Middle Chinese 床.

床虱 (Japanese): bedbug

Definitions

  1. bedbug

Ancestry of “床虱”, step by step

床虱 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesethe floor; a bed; a raised area of a stage where...
2Middle Chinese

via Japanese

StepLanguageWordMeaning
1Japanesea sucking louse, especially the head louse
Every word from Middle Chinese Every word from Japanese
床虱 — Etymology, Origin & Word History | Etymology Explorer