Where does “pi-jaw” come from?

pi-jaw (English) comes from English Pi, from Ancient Greek πῖ, from Ancient Greek πεῖ, from Proto-Semitic pay- — the mouth.

pi-jaw (English): Patronising or lecturing talk, especially from an...

Definitions

  1. Patronising or lecturing talk, especially from an...

Ancestry of “pi-jaw”, step by step

pi-jaw traces back through two separate lines of ancestry.

via English Pi

StepLanguageWordMeaning
1EnglishPiThe sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek
2Ancient GreekπῖAlternative form of πεῖ
3Ancient Greekπεῖpi, the name for the sixteenth letter Π, π of the...
4Proto-Semiticpay-the mouth

via English Jaw

StepLanguageWordMeaning
1EnglishJawOne of the bones, usually bearing teeth, which form the framework of the mouth
2Middle Englishjowejaw, jawbone
3Old Frenchjoecheek
4Vulgar Latin*ga(v)ota
Every word from Proto-Semitic pay-Every word from Ancient Greek πεῖEvery word from Ancient Greek πῖ