Lewis & Short

Gythēum or Gythī̆um, i, n., = Γύθειον or Γύθιον,

  1. I. a seaport in Laconia, on the Eurotas, now Paleopoli, Plin. 6, 34, 39, § 214; Cic. Off. 3, 11, 49; Liv. 34, 38; 25, 27.
  2. II. Deriv.: Gythĕātes, ae, m., adj., = Γυθεάτης, of or belonging to Gythēum, Gytheatic: pontus, Mela, 2, 3, 9: sinus, Plin. 4, 5, 8, § 16.