From Wiktionary, the free dictionary
percosa
- (Alghero) Alternative form of perquè
- because
- so that (followed by the subjunctive)
- This form supplants perquè in Algherese in both senses as the everyday term.
- “percosa”, in Diccionari d'Alguerés, 2022 May 16 (last accessed)
- El Català de l'Alguer : un model d'àmbit restringit, Barcelona, 2003, →ISBN, page 33