From Adria (a place near its shore); the Adriatic sea (including the Ionian) -- Adria.
Thayer's Greek Lexicon
Strong's 99: Ἀδρίας
Ἀδρίας (WH Ἁδρ.), , ὁ, Adrias, the Adriatic Sea, i. e., in a wide sense, the sea between Greece and Italy: Acts 27:27, (cf. B. D. under the word ; Dict. of Greek and Rom. Geog. under the word Adriaticum Mare).
Acts 27:27 - N-DMS GRK:ἐν τῷ Ἁδρίᾳ κατὰ μέσον NAS: as we were being driven about in the Adriatic Sea, about KJV: in Adria, about INT: in the Adriatic toward [the] middle