D defs.my
Entry 3 senses · 2 variants Webster, 1913

Infernal

/ĭnˌ-fẽrn'-əl/ · In·fer·nal · IPA /ɪnˈfɝnəl/
01 a. Of or pertaining to or suitable for the lower regions, inhabited, according to the ancients, by the dead; pertaining to Pluto's realm of th…
  1. 1.
    Of or pertaining to or suitable for the lower regions, inhabited, according to the ancients, by the dead; pertaining to Pluto's realm of the dead, the Tartarus of the ancients.
    “The Elysian fields, the infernal monarchy.” — Garth.
  2. 2.
    Of or pertaining to, resembling, or inhabiting, hell; suitable for hell, or to the character of the inhabitants of hell; hellish; diabolical; as, infernal spirits, or conduct.
    “The instruments or abettors in such infernal dealings.” Addison.
Phrases & compounds
Infernal machine — a machine or apparatus maliciously designed to explode, and destroy life or property.
Infernal stone — (lapis infernalis), lunar caustic; formerly so called. The name was also applied to caustic potash.
02 n. An inhabitant of the infernal regions; also, the place itself.
  1. 1.
    An inhabitant of the infernal regions; also, the place itself.[Obs.]