arcum
arcum is a Latin form of arcus, meaning “bow; arch; rainbow”. It is the accusative singular masculine noun.
Found 78 times in the Latin texts on Socratos.
Where it is used
Cicero, In C. Verrem 2.4.74: … erat in illa magnitudine aetas atque habitus virginalis; sagittae pendebant ab umero, sinistra manu retinebat arcum, dextra ardentem facem praeferebat.
Cicero, De Natura Deorum 2.113: Hic autem aspicitur sese ostendens emergit Scorpios alte posteriore trahens flexum vi corporis Arcum. quem propter nitens pinnis convolvitur Ales. at propter se Aquila ardenti cum corpore portat. Deinde Delphinus. exinde Orion obliquo corpore nitens.
All forms of arcus (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.