Where does “虎の尾” come from?

虎の尾 (Japanese) comes from Japanese 尾, from Old Japanese 尾.

Ancestry of “虎の尾”, step by step

虎の尾 traces back through two separate lines of ancestry.

via Japanese 尾

StepLanguageWordMeaning
1Japanese尾a tail; the foot of a mountain; the end of...
2Old Japanese尾—

via Japanese 虎

StepLanguageWordMeaning
1Japanese虎a tiger
Every word from Old Japanese 尾 →Every word from Japanese 尾 →