[{"Bold_text": "noun", "List Items": ["something, as a glove, thrown down by a medieval knight in token of challenge to combat.", "Archaic.a challenge.", "Archaic.a pledge or pawn; security."]}, {"Bold_text": "verb (used with object)", "List Items": ["Archaic.to pledge, stake, or wager."]}, {"Bold_text": "noun", "List Items": ["(chiefly in technical use) gauge ."]}, {"Bold_text": "noun", "List Items": ["greengage ."]}, {"Bold_text": "noun", "List Items": ["Thomas,1721–87,British general in America 1763–76."]}]