Where does “stöpis” come from?

stöpis (Swedish) comes from Swedish is, from Old Swedish is, from Old Norse íss, from Proto-Germanic īsą, from Proto-Indo-European h₁eyH- — ice, frost.

stöpis (Swedish): snow ice (opaque ice formed from freezing slush on an ice cover)

Definitions

snow ice (opaque ice formed from freezing slush on an ice cover)

Ancestry of “stöpis”, step by step

stöpis traces back through two separate lines of ancestry.

via Swedish is

Step	Language	Word	Meaning
1	Swedish	is	Ice; frozen water; Ice; a sheet of ice lying on a...
2	Old Swedish	is	—
3	Old Norse	íss	ice
4	Proto-Germanic	īsą	ice
5	Proto-Indo-European	h₁eyH-	ice, frost

via Swedish stop

Step	Language	Word	Meaning
1	Swedish	stop	beer mug; stoup
2	Old Norse	staup	a small glass for liquor
3	Proto-Germanic	staupo-	—

Every word from Proto-Indo-European h₁eyH- →Every word from Proto-Germanic īsą →Every word from Old Norse íss →