Where does “ruga” come from?
ruga (Sardinian) comes from Latin rūga, from Proto-Indo-European krewp-, from Proto-Indo-European krew- — to fall, collapse; scab; to fall, break, bruise.
ruga (Sardinian): caterpillar
Ancestry of “ruga”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Latin | rūga | — |
| 2 | Proto-Indo-European | krewp- | scab, crust; to become encrusted |
| 3 | Proto-Indo-European | krew- | to fall, collapse; scab; to fall, break, bruise |