Where does “bocaterrós” come from?

bocaterrós (Catalan) comes from Catalan terrós, from Catalan ós, from Latin ursus, from Proto-Italic *orsos.

bocaterrós (Catalan): prone

Definitions

bocaterrós traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	Catalan	terrós	earth, earthy
2	Catalan	ós	bear
3	Latin	ursus	a bear
4	Proto-Italic	*orsos	—

Step	Language	Word	Meaning
1	Catalan	boca	mouth
2	Latin	bucca	the lower part of the cheek; the mouth; c. 27 CE...