Where does “mouth shot” come from?

mouth shot (English) comes from English mouth, from Middle English mouþ, from Old English mūþ, from Proto-West Germanic *munþ, from Proto-Germanic munþaz, from Proto-Indo-European men- — to think, mind; spiritual activity; to stay,...

Ancestry of “mouth shot”, step by step

mouth shot traces back through two separate lines of ancestry.

via English mouth

StepLanguageWordMeaning
1EnglishmouthThe opening of a creature through which food is...
2Middle EnglishmouþAlternative form of mouth
3Old Englishmūþmouth, opening, door, gate
4Proto-West Germanic*munþmouth
5Proto-Germanicmunþazmouth
6Proto-Indo-Europeanmen-to think, mind; spiritual activity; to stay,...

via English shot

StepLanguageWordMeaning
1EnglishshotWorn out or broken; Woven from warp and weft...
2Middle EnglishschotA missile or projectile; a thrown or fired weapon
3Old EnglishScotshot, act of shooting
4Old Norseskot
5Proto-Germanicskutąshot
6Proto-Indo-European(s)kewd-to advance, push; to drive, propel
Every word from Proto-Indo-European men-Every word from Proto-Germanic munþazEvery word from Proto-West Germanic *munþ