Lewis & Short

Gărămantes, um, m., = Γαράμαντες,

  1. I. a powerful tribe of the interior of Africa, beyond the Gœtulians, in the modern Fezzan, Mel. 1, 4, 4; 1, 8, 7; Plin. 5, 5, 5, § 36 sq.; Liv. 29, 33; Verg. E. 8, 44; id. A. 6, 794.
    In sing.: Gărămas, antis, Sil. 6, 705; Sen. Herc. Oet. 1106.
  2. II. Derivv.
    1. A. Gărămantĭcus, a, um, adj., of or belonging to the Garamantes, Garamantian, poet. also i. q. African: signa, Sil. 1, 142: vates, id. 14, 440: carbunculi, Plin. 37, 7, 25, § 92.
      Hence,
      1. 1. Plur. as subst.: Gără-mantĭci = Garamantes, Schol. Vet. Juv. 10, 150.
      2. 2. Gărămantĭca, ae, f., a sort of precious stone, also called sandaresus or sandastros, Plin. 37, 7, 28, § 100 (al. Garamantites).
    2. B. Gărămantis, ĭdis, adj., = Garamanticus: Nympha, Verg. A. 4, 198: pinus, Sil. 14, 498: gemma, id. 15, 679.