R / rōbŏrārĭum
noun hapax

rōbŏrārĭum

gen. rōbŏrārii · gender neuter · decl. 2nd
an enclosure for animals; built of oaken boards
an enclosure for animals, built of oaken boards (= vivarium), Scip. Afric. ap. Gell. 2, 20, 5 sq.