Where does “mouthpipe” come from?

mouthpipe (English) comes from English pipe, from Middle English pīpe, from Middle English pipen, from Old English pīpian, from Proto-West Germanic pīpan, from Proto-Germanic pīpaną, from Latin pipo — I pip, peep.

Ancestry of “mouthpipe”, step by step

mouthpipe traces back through two separate lines of ancestry.

via English pipe

StepLanguageWordMeaning
1EnglishpipeMeanings relating to a wind instrument; Meanings...
2Middle EnglishpīpeA pipe; a piece of tubing used as a channel (often for fluids)
3Middle EnglishpipenTo use a pipe or similar musical instrument; to...
4Old Englishpīpianto pipe
5Proto-West Germanicpīpanto peep, to chirp, to squeak
6Proto-GermanicpīpanąTo chirp or pipe like a bird or rodent; To talk...
7LatinpipoI pip, peep

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,...
Every word from Latin pipo