Where does “ピー” come from?

ピー (Japanese) comes from English pee, from English piss, from Middle English pisse, from Middle English pissen, from Old French pissier, from Vulgar Latin pissiare, from Latin pissio — I piss.

ピー (Japanese): The name of the Latin-script letter P; pi

Definitions

  1. The name of the Latin-script letter P; pi

Ancestry of “ピー”, step by step

ピー traces back through two separate lines of ancestry.

via English pee

StepLanguageWordMeaning
1EnglishpeeUrine; To urinate; To drizzle
2EnglishpissUrine; An instance of pissing; Alcoholic...
3Middle Englishpissepiss, urine; Alternative form of pissen
4Middle EnglishpissenTo piss; to deliver urine from the genitals; To...
5Old Frenchpissierto piss; to excrete urine
6Vulgar Latinpissiarepresent active infinitive of *pīssiō
7LatinpissioI piss

via Latin pi

StepLanguageWordMeaning
1Latinpi
2Ancient Greekπεῖpi, the name for the sixteenth letter Π, π of the...
3Proto-Semiticpay-the mouth
Every word from Latin pissioEvery word from Vulgar Latin pissiareEvery word from Old French pissier