Where does “batsqueak” come from?

batsqueak (English) comes from English bat, from French bât, from Old French bast, from Vulgar Latin bastum, from Latin bastāre, from Ancient Greek βαστάζω — to lift, lift up, raise; to bear, carry; to carry...

batsqueak (English): The ultrasonic noise emitted by a bat, especially...

Definitions

  1. The ultrasonic noise emitted by a bat, especially...

Ancestry of “batsqueak”, step by step

batsqueak traces back through two separate lines of ancestry.

via English bat

StepLanguageWordMeaning
1EnglishbatAny of the flying mammals of the order...
2Frenchbâtpacksaddle
3Old Frenchbastpacksaddle
4Vulgar LatinbastumA stick
5Latinbastāre
6Ancient Greekβαστάζωto lift, lift up, raise; to bear, carry; to carry...

via English squeak

StepLanguageWordMeaning
1EnglishsqueakA short, high-pitched sound, as of two objects...
Every word from Ancient Greek βαστάζωEvery word from Latin bastāreEvery word from Vulgar Latin bastum