Where does “rymmare” come from?

rymmare (Swedish) comes from Swedish rymma, from Old Swedish rȳma, from Latin rheuma, from Ancient Greek ῥεῦμα, from Ancient Greek ῥέω, from Proto-Indo-European srew-, from Proto-Indo-European ser- — to flow; to guard; to bind, to tie together.

Ancestry of “rymmare”, step by step

Step	Language	Word	Meaning
1	Swedish	rymma	to hold; to escape, to flee, to evacuate
2	Old Swedish	rȳma	to make room, clear
3	Latin	rheuma	catarrh, rheum
4	Ancient Greek	ῥεῦμα	stream, flow, current
5	Ancient Greek	ῥέω	I flow, stream, run, gush; I let flow, pour; I...
6	Proto-Indo-European	srew-	to flow, stream
7	Proto-Indo-European	ser-	to flow; to guard; to bind, to tie together

Every word from Proto-Indo-European ser- →Every word from Proto-Indo-European srew- →Every word from Ancient Greek ῥέω →