portis
portis is a Latin form of porta, meaning “gate, city gate; door, entrance”. It is the ablative plural feminine noun or ablative plural masculine noun or dative plural masculine noun.
It can also be a form of portus, “harbor, port; haven, refuge”.
Found 242 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 2.32.4: … rmorum adaequarent, et tamen circiter parte tertia, ut postea perspectum est, celata atque in oppido retenta, portis patefactis eo die pace sunt usi.
All forms of porta (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.