Abbott-Smith Manual Greek Lexicon
Ἁδρίας (G99)
1 Ἁδρίας (T, Rec. Ἀδρίας ), -ου, ὁ , the Adriatic sea, in later Greek usage extended to take in all the waters between Greece and Italy: Ac 27:27 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain