Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

ostrĕa, ae, f., and (rarely) ostrĕum, i, n., = ὄστρεον, an oyster, mussel, sea-snail (class.).

        1. (α) Form ostrea, Enn. Heduph. 2 (p. 166 Vahl.); Lucil. ap. Non. 216, 6; Afran.; Turp. and Varr. ib.; Plaut. Rud. 2, 1, 8; Cic. Fragm. ap. Non. 216, 14: ostrearum vivaria, Plin. 9, 54, 79, § 168.
        2. (β) Form ostreum: luna alit ostrea, Lucil. ap. Gell. 20, 8, 4; id. ap. Non. 216, 16; Varr. ib. 20: ostrea Circeis, Miseno oriuntur echini, Hor. S. 2, 4, 33; Ov. F. 6, 174; Juv. 4, 142.
          In sing. collect.: ostrei testas siccas tundere, Pall. 1, 41, 3.