[{"Bold_text": "noun", "List Items": ["a bottomless, boxlike, usually glass-covered structure and the bed earth it covers, heated typically by fermenting manure or electrical cables, for growing plants out of season.", "a place or environment favoring rapid growth or spread, especially of something disliked or unwanted:a hotbed of disease.", "Slang.a bed by two or more persons in shifts, each sleeping in it for or at a designated time and then vacating it for the next occupant."]}, {"Bold_text": "verb (used without object)", "List Items": ["Slang.to share a bed shifts, so that it is always occupied."]}]