Lewis & Short

Hĕcătē, ēs, f., = Ἑκάτη,

  1. I. daughter of Perses, or Persœus, and Asteria, sister of Latona, the presider over enchantments, conjurations, etc.; she is often identified with Diana, Luna, and Proserpina, and is therefore represented with three heads, Cic. N. D. 3, 18, 46; Verg. A. 4, 511 Serv.; Ov. M. 7, 74; 94; 194; 14, 405; id. F. 1, 141; Hor. S. 1, 8, 33; Sen. Phaedr. 420 et saep.
  2. II. Derivv.
    1. A. Hĕcătēĭus, a, um, adj., of or belonging to Hecate, Hecateian: carmina, i. e. magical incantations, Ov. M. 14, 44: Aulis, devoted to Diana, Stat. Ach. 1, 447: Idus, i. e. of August, sacred to Diana, id. Silv. 3, 1, 60.
    2. B. Hĕcătēïs, ĭdos, f. adj., Hecateian: herba, i. e. enchanter’s nightshade, Ov. M. 6, 139.