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† 1. astăcus, i, m., = ἄστακος, a kind of crab, Plin. 9, 31, 51, § 97; cf. Isid. Orig. 12, 8, 9.
2. Astăcus, i, m., = Ἄστακος, the father of Menalippus, who is hence called Astacides, Ov. Ib. 513; Stat. Th. 8, 725.
3. Astăcus (-ŏs), i, f., = Ἄστακος or Ἀστακός, a town in Bithynia, Mel. 1, 19, 4: Astacum, unde et ex eo Astacenus sinus, Plin. 5, 32, 43, § 148.