Lewis & Short

1. an-no (better adn-), āre, v. n.

  1. I. To swim to, toward, or along; constr. with the dat., ad, or acc.
          1. (α) With dat.: terrae, Verg. A. 6, 358: ei insulae crocodili non adnant, Plin. 8, 25, 38, § 93 Jan.
          2. (β) With ad: ad litus, Gell. 7, 8, 7.
          3. (γ) With acc.: pauci milites, qui naves adnare possent, Caes. B. C. 2, 44.
            Absol.: plures adnabunt thynni, * Hor. S. 2, 5, 44.
    1. B. Trop.: quod ubique gentium est, ad eam urbem posset adnare, come to, approach, Cic. Rep. 2, 4.
  2. II. To swim with or along with: pedites adnantes equis, Tac. A. 14, 29.