ostrĕum: i, n., v. ostrea.
ostrĕum,¹² v. ostrea : Lucil. d. Gell. 20, 8, 4 ; Hor. S. 2, 4, 33 ; Plin. 32, 63 ; Juv. 4, 140 ; Ov. F. 6, 174. [genre incertain] Cic. Div. 2, 33 ; Fam. 7, 26, 2.