ἀμφίστροφος
From LSJ
καὶ ὑποθέμενος κατὰ τῆς κεφαλῆς φέρειν τὰς πληγάς, ὡς ἐν ἐκείνῃ τοῦ τε κακοῦ τοῦ πρὸς ἀνθρώπους → and having instructed them to bring their blows against the head, seeing that the harm to humans ... (Josephus, Antiquities of the Jews 1.50)
English (LSJ)
ον,
A turning to and fro, quick-turning, βᾶρις ἀ. A.Supp.882 (Sch. expl. by ἀμφιέλισσα). 2 Ἀμφίστροφον, τό, at Delos, possibly a domed building, IG11(2).142.38 (iv B. C.), al.