Where does “rumigatus” come from?

rumigatus (Latin) comes from Latin rumigo, from Latin rumen, from Proto-Indo-European sréwmn̥, from Proto-Indo-European srew-, from Proto-Indo-European ser- — to flow; to guard; to bind, to tie together.

Definitions

Ancestry of “rumigatus”, step by step

Step	Language	Word	Meaning
1	Latin	rumigo	I chew over again, ruminate
2	Latin	rumen	throat, gullet
3	Proto-Indo-European	sréwmn̥	—
4	Proto-Indo-European	srew-	to flow, stream
5	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 Proto-Indo-European sréwmn̥ →