jack-a-lantern


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Noun1.jack-a-lantern - a large poisonous agaric with orange caps and narrow clustered stalksjack-a-lantern - a large poisonous agaric with orange caps and narrow clustered stalks; the gills are luminescent
agaric - a saprophytic fungus of the order Agaricales having an umbrellalike cap with gills on the underside
genus Omphalotus, Omphalotus - a genus of fungi with a depressed disc in the cap