'Omphalotus olearius' definitions:

Definition of 'Omphalotus olearius'

From: GCIDE
  • Jack-o'-lantern \Jack"-o'-lan`tern\, Jack-with-a-lantern \Jack"-with-a-lan`tern\, n.
  • 1. (Biol.) A large orange-colored luminescent mushroom, Clitocybe illudens, also classified as {Omphalotus olearius}. It is poisonous and is sometimes found on hardwood tree stumps. [WordNet sense 1]
  • Syn: jack-a-lantern, Clitocybe illudens. [WordNet 1.5 +PJC]
  • 2. a pale light sometimes seen at night over marshy ground; an ignis fatuus; a will-o'-the-wisp. [WordNet sense 2]"[Newspaper speculations] supplying so many more jack-o'-lanterns to the future historian." --Lowell.
  • Syn: friar's lantern, ignis fatuus, will-o'-the-wisp. [WordNet 1.5]
  • 3. A lantern carved from a hollowed-out pumpkin, with holes cut in the rind and so shaped that when it is illuminated by a candle inside, the features of a human face, cat's face, etc. appear in a glowing yellow color. It is used mostly as a decoration at Halloween. [WordNet 1.5 +PJC]