Where does “stapul” come from?

stapul (Old Swedish) comes from Proto-Germanic stapulaz, from Proto-Indo-European stebʰ‑.

Ancestry of “stapul”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	stapulaz	pillar, post; basis, foundation
2	Proto-Indo-European	stebʰ‑	—

stapul — Etymology, Origin & Word History | Etymology Explorer