[{"Bold_text": "noun", "List Items": ["a recreation in which two children alternately ride up and down while seated at opposite ends of a plank balanced at the middle.", "a plank or apparatus for this recreation.", "an up-and-down or a back-and-forth movement or procedure.", "Whist.a crossruff."]}, {"Bold_text": "adjective", "List Items": ["moving up and down, back and forth, or alternately ahead and behind:It was a seesaw game with the lead changing hands many times."]}, {"Bold_text": "verb (used without object)", "List Items": ["to move in a seesaw manner:The boat seesawed in the heavy sea.", "to ride or play on a seesaw.", "to keep changing one's decision, opinion, or attitude; vacillate."]}, {"Bold_text": "verb (used with object)", "List Items": ["to cause to move in a seesaw manner."]}]