Where does “seatpin” come from?

seatpin (English) comes from English seat, from Middle English sete, from Old English sǣte, from Proto-Germanic sētiją, from Proto-Indo-European sḗd- — to sit.

Ancestry of “seatpin”, step by step

seatpin traces back through two separate lines of ancestry.

via English seat

StepLanguageWordMeaning
1EnglishseatSomething to be sat upon; A location or site; The...
2Middle Englishsete—
3Old Englishsǣtehouse
4Proto-Germanicsētijąseat
5Proto-Indo-Europeansḗd-to sit

via English PIN

StepLanguageWordMeaning
1EnglishPINAcronym of personal identification number;...
2Middle Englishpinne—
3Old Englishpinnpin; peg; an instrument of writing; pen
4Proto-Germanicpinnazpin
5Proto-Indo-Europeanbend-point, pin; peg, tip, protruding point, edge;...
Every word from Proto-Indo-European sḗd- →Every word from Proto-Germanic sētiją →Every word from Old English sǣte →