[{"Bold_text": "noun", "List Items": ["Also called runner .one of the curved pieces on which a cradle or a rocking chair rocks .", "rocking chair rocking chair.", "a performer or fan of rock-'n'-roll rock-'n'-roll.music.", "a rock-'n'-roll song:She sang a ballad and followed that with two of her well-known rockers.", "any of various devices that operate with a rocking .", "Graphic Arts.a small steel plate with one curved and toothed edge for roughening a copperplate to make a mezzotint.", "Mining. cradle(def13) cradle(def13).", "an ice skate that has a curved blade."]}]