[{"Bold_text": "noun", "List Items": ["a receptacle of hard material, having a bowl-shaped cavity in which substances are reduced to powder with a pestle.", "any of various mechanical appliances in which substances are pounded or ground.", "a cannon very short in proportion to its bore, for throwing shells at high angles.", "some similar contrivance, as for throwing pyrotechnic bombs or a lifeline."]}, {"Bold_text": "verb (used with or without object)", "List Items": ["to attack with mortar fire or shells."]}, {"Bold_text": "noun", "List Items": ["a mixture of lime or cement or a combination of both with sand and water, used as a bonding agent between bricks, stones, etc.", "any of various materials or compounds for bonding together bricks, stones, etc.:Bitumen was used as a mortar."]}, {"Bold_text": "verb (used with object)", "List Items": ["to plaster or fix with mortar."]}]