[{"Bold_text": "noun", "List Items": ["any external prop or support built to steady a structure by opposing its outward thrusts, especially a projecting support built into or against the outside of a masonry wall.", "any prop or support.", "a thing shaped like a buttress, as a tree trunk with a widening base.", "a bony or horny protuberance, especially on a horse's hoof."]}, {"Bold_text": "verb (used with object)", "List Items": ["to support by a buttress; prop up.", "to give encouragement or support to (a person, plan, etc.).Synonyms: reinforce , brace , inspirit , support , hearten , encourage"]}]