Lewis & Short

carbōnārĭus, a, um, adj. [1. carbo],

  1. I. of or relating to charcoal: negotium, traffic in charcoal, Aur. Vict. Vir. Ill. 72.
  2. II. Subst.
    1. A. carbōnārĭus, i, m., a burner of charcoal, a collier, Plaut. Cas. 2, 8, 2; Inscr. Orell. 4302.
    2. B. carbōnārĭa, ae, f.
      1. 1. (Sc. fornax.) A furnace for charcoal, Tert. Car. Christ. 6.
      2. 2. (Sc. femina.) The Charcoal-Woman, the title of a lost play by Plautus, Fest. p. 30, 27 Müll.