Where does “Piat” come from?

Piat (English) comes from French Piat, from Latin piatus, from Latin piō, from Proto-Italic *pīāō — to expiate.

Ancestry of “Piat”, step by step

StepLanguageWordMeaning
1FrenchPiat—
2Latinpiatusappeased
3Latinpiōto appease, propitiate
4Proto-Italic*pīāōto expiate
Every word from Proto-Italic *pīāō →Every word from Latin piō →Every word from Latin piatus →