gyro
gyro is a Latin form of gyrus, meaning “circle, ring; circuit; course”. It is the ablative singular masculine noun.
Found 37 times in the Latin texts on Socratos.
Where it is used
Vergil, Aeneid 7.379: quem pueri magno in gyro vacua atria circum
All forms of gyrus (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.