illas
illas is a Latin form of ille, meaning “that; he, she, it; the former”. It is the accusative plural feminine pronoun.
Found 374 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Civili 3.32: … anis eius provinciae, sed in singulos conventus singulasque civitates certae pecuniae imperabantur, mutuasque illas ex senatusconsulto exigi dictitabant; publicanis, ut in Syria fecerant, insequentis anni vectigal promutuum.
Vergil, Georgics 3.269: Illas ducit amor trans Gargara transque sonantem
Plautus, Asinaria 3.3.637: ille qui íllas perdit salvos est, ego qui non perdo pereo.
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.