Lewis & Short

Suēvi or Suēbi (in inscrr. always; but most MSS. have Suevi), ōrum, m., the Suevi, a powerful people in the north-eastern part of Germany, Caes. B. G. 4, 1; Tac. G. 38; Luc. 2, 51.
Hence,

  1. A. Suēvus or Suē-bus, a, um, adj., of or belonging to the Suevi, Suevan: natio, Caes. B. G. 1, 53: crinis, worn in the manner of the Suevi, Sil. 5, 134.
    Subst.: Suēvus, i, m., one of the Suevi (poet.), Claud. Cons. Hon. 4, 655.
  2. B. Suē-vĭa or Suēbĭa, ae, f., the country of the Suevi, Tac. G. 43 init. and 45 fin.
  3. C. Suē-vĭcus or Suēbĭcus, a, um, adj., Suevic: mare, Tac. G. 45 init.