suas
suas is a Latin form of suus, meaning “his, her, its, their (own)”. It is the accusative plural feminine adjective or accusative plural feminine pronoun.
Found 830 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 1.11.1: Helvetii iam per angustias et fines Sequanorum suas copias traduxerant et in Haeduorum fines pervenerant eorumque agros populabantur.
Plautus, Cistellaria 1.1.37: suás paelicés esse aiúnt, eunt depréssum.
All forms of suus (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.