[{"Bold_text": "noun", "List Items": ["Mycology.the horizontal portion of a mushroom, bearing gills, tubes, etc., on its underside; a cap.", "Zoology.the umbrella or bell of a jellyfish. pileum .", "the umbrella or bell of a jellyfish.", "pileum .", "Also called cap cloud cap cloud,Meteorology.a small, thin cloud just above or attached to a growing cumulus cloud.", "a felt skullcap worn by the ancient Romans and Greeks."]}]