mastrūca — Lewis & Short
mastrūca (mastrūga), ae, f.Sardinian; v. infra,
mastrucam, quod Sardum est, inridens Cicero ex industria dixit,Quint. 1, 5, 8:
mastruca vestis Sardonica ex pelliculis ferarum, de qua Cicero pro Scauro: Quem purpura regalis non commovit, eum Sardorum mastruca mutavit?Isid. Orig. 19, 23, 5 (Orell. Cic. Fragm. Scaur. § 45, d, p. 268); so Prud. Symm. 2, 695.—
As a term of abuse,a sheepskin, a ninny, Plaut. Poen. 5, 5, 34.