σίνις · sinis — LSJ
ravager, plunderer, Αὐτόλυκον πολέων κτεάνων σίνιν Antim. (?) ap.Sch. S. OC 378; ἔθρεψεν λέοντα σίνιν δόμοις (λέοντος ἶνιν Conington) A. Ag. 718, cf. Call. Ap. 92, Lyc. 539: as Adj. destroying, σ. ἀνήρ, as an example of a γλῶσσα, Poet. ap. Arist. Rh. 1406a8.
pr. n. Σίνις, the Destroyer, a famous robber of the Isthmus of Corinth, E. Hipp. 977, Marm.Par. 36, X. Mem. 2.1.14, etc.; cf. Πιτυοκάμπτης. (Freq. misspelt σίννις in codd., as Arist. l.c.)