Where does “roquer” come from?

roquer (Catalan) comes from Catalan -er, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

roquer (Catalan): rock

Definitions

Step	Language	Word	Meaning
1	Catalan	-er	Used to form nouns meaning the location or object...
2	Latin	-ārius	er
3	Proto-Italic	*-āzios	Forms relational adjectives to nouns (and rarely numerals)