Where does “三塁” come from?

三塁 (Japanese) comes from Japanese 三, from Middle Chinese さん.

三塁 (Japanese): third base

Definitions

  1. third base

Ancestry of “三塁”, step by step

三塁 traces back through two separate lines of ancestry.

via Japanese 三

StepLanguageWordMeaning
1Japanese三three, 3; third; three
2Middle Chineseさん—

via Japanese 塁

StepLanguageWordMeaning
1Japanese塁base
2Middle Chinese壘—
Every word from Middle Chinese さん →Every word from Japanese 三 →