ostrĕārĭus — Lewis & Short
ostrĕārĭus, a, um, adj.ostrea,
I of or belonging to oysters, oyster- (post-Aug.):
panis,oyster-bread, bread eaten with oysters, Plin. 18, 11, 27, § 105.—
II Subst.: ostrĕā-rĭum, ii, n., an oyster-bed, Plin. 9, 51, 74, § 160:
in Baiano locare,Macr. S. 2, 11.