Lewis & Short

Ĕpĭcūrus, i, m., = Ἐπίκουρος,

  1. I. the famous Greek philosopher of Gargettus, in Attica, the author of the Epicurean philosophy, so called after him, which assumed pleasure to be the highest good, Cic. Fin. 1, 9, 29; 2, 2 sq.; id. Ac. 2, 42; id. Tusc. 1, 34; 2, 3, 8 et saep.
    Deriv.,
  2. II. Ĕpĭcūrēus, a, um, adj., of Epicurus, Epicurean: medicamenta doloris, i. e. pleasure, Cic. Fin. 2, 7 fin.: secta, Suet. Gram. 8.
    More freq. subst.: Ĕpĭcūrēi, ōrum, m., the adherents of the Epicurean philosophy, Epicureans, Cic. Fin. 1, 7, 25; 2, 25, 81; id. Tusc. 1, 31, 77; Vulg. Act. 17, 18 et saep.
    In sing., Quint. 6, 3, 78; Suet. Gram. 6.