Where does “鉤括弧” come from?

鉤括弧 (Japanese) comes from Japanese 鉤 — hook.

鉤括弧 (Japanese): a corner bracket, either of the pair of brackets, serving as a quotation mark in Chinese and Japanese orthography

Definitions

  1. a corner bracket, either of the pair of brackets, serving as a quotation mark in Chinese and Japanese orthography

Ancestry of “鉤括弧”, step by step

鉤括弧 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesehook

via Japanese 括弧

StepLanguageWordMeaning
1Japanese括弧a parenthesis; a bracket either of a pair of brackets
Every word from Japanese