[{"Bold_text": "noun", "List Items": ["a jointed device or flexible piece on which a door, gate, shutter, lid, or other attached part turns, swings, or moves.", "a natural anatomical joint at which motion occurs around a transverse axis, as that of the knee or a bivalve shell.", "that on which something is based or depends; pivotal consideration or factor.", "Also called mount .Philately.a gummed sticker for affixing a stamp to a page of an album, so folded as to form a hinge, allowing the stamp to be raised to reveal the text beneath."]}, {"Bold_text": "verb (used without object)", "List Items": ["to be dependent or contingent on, or as if on, a hinge (usually followed byonorupon):Everything hinges on his decision.Synonyms: depend , pivot , swing , rest"]}, {"Bold_text": "verb (used with object)", "List Items": ["to furnish with or attach by a hinge or hinges.", "to attach as if by a hinge.", "to make or consider as dependent upon; predicate:He hinged his action on future sales."]}]