Where does “rugose” come from?

rugose (Italian) comes from Italian rugoso, from Latin rugosus, from Latin rūga, from Proto-Indo-European krewp-, from Proto-Indo-European krew- — to fall, collapse; scab; to fall, break, bruise.

rugose (Italian): feminine plural of rugoso

Definitions

feminine plural of rugoso

Ancestry of “rugose”, step by step

Step	Language	Word	Meaning
1	Italian	rugoso	wrinkled, wrinkly, lined; rugose
2	Latin	rugosus	wrinkled; shrivelled
3	Latin	rūga	a crease in the face, wrinkle
4	Proto-Indo-European	krewp-	scab, crust; to become encrusted
5	Proto-Indo-European	krew-	to fall, collapse; scab; to fall, break, bruise

Every word from Proto-Indo-European krew- →Every word from Proto-Indo-European krewp- →Every word from Latin rūga →