Where does “マテガイ” come from?

マテガイ (Japanese) comes from Japanese 貝, from Old Japanese かい.

マテガイ (Japanese): a razor clam, more specifically Gould's razor...

Definitions

  1. a razor clam, more specifically Gould's razor...

Ancestry of “マテガイ”, step by step

マテガイ traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesea shellfish
2Old Japaneseかい

via Japanese 真手

StepLanguageWordMeaning
1Japanese真手both hands together
Every word from Old Japanese かいEvery word from Japanese
マテガイ — Etymology, Origin & Word History | Etymology Explorer