rupem
rupem is a Latin form of rupes, meaning “cliff, rock”. It is the accusative singular feminine noun.
Found 26 times in the Latin texts on Socratos.
Where it is used
Vergil, Aeneid 8.190: Iam primum saxis suspensam hanc aspice rupem,
All forms of rupes (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.