casas
casas is a Latin form of cado, meaning “fall; die”. It is the perfect passive participle accusative plural feminine.
Found 26 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 5.43.1: Septimo oppugnationis die maximo coorto vento ferventes fusili ex argilla glandes fundis et fervefacta iacula in casas, quae more Gallico stramentis erant tectae, iacere coeperunt.
All forms of cado (conjugation 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.