Lewis & Short

Năsămōnes, um, m., = Νασαμῶνες, a Libyan people to the south-west of Cyrenaica, extending to the Great Syrtis, Plin. 5, 5, 5, § 33; 7, 2, 2, § 14; 13, 17, 23, § 104: tota commercia mundo Naufragiis Nasamones habent (because they plundered shipwrecked persons), Luc. 9, 443.
In sing., a Nasamonian: quas (herbas) Nasamon, gens dura, legit, Luc. 9, 439; acc. Nasamona, Sil. 6, 44.
Hence,

  1. A. Năsămōnĭăcus, a, um, adj., Nasamonian, Sil. 16, 630; cf. Ov. M. 5, 129.
    1. 2. Transf., in gen., African: rex, i. e. Hannibal, Stat. S. 4, 6, 75.
  2. B. Năsămōnĭăs, ădis, f., = Νασαμωνιάς, the Nasamonian: Nasamonias Harpe, Sil. 2, 117.
  3. C. Năsămōnītis, ĭdis, f., = Νασαμωνῖτις, a precious stone, otherwise unknown, Plin. 37, 10, 64, § 175.
  4. D. Nă-sămōnĭus, a, um, adj., Nasamonian; poet. for African: natus Nasamonii Tonantis, i. e. Alexander, because he passed for the son of Jupiter Ammon, Stat. S. 2, 7, 93: Jugurtha, Sid. Carm. 9, 257.