[{"Bold_text": "noun", "List Items": ["a large wine bottle having a capacity of two ordinary bottles or 1.5 liters (1.6 quarts).", "a magnum cartridge or firearm."]}, {"Bold_text": "adjective", "List Items": ["(of a cartridge) equipped with a larger charge than other cartridges of the same size.", "(of a firearm) using such a cartridge.", "Informal.unusually great in power or size:a magnum spotlight; a magnum dosage."]}]