<p><strong>Noun</strong></p><ul><li>a jointed device or flexible piece on which a door, gate, shutter, lid, or other attached part turns, swings, or moves.</li><li>a natural anatomical joint at which motion occurs around a transverse axis, as that of the knee or a bivalve shell.</li><li>that on which something is based or depends; pivotal consideration or factor.</li><li>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.</li></ul><p><strong>Verb</strong></p><ul><li>(used without object) to be dependent or contingent on, or as if on, a hinge (usually followed by on or upon): Everything hinges on his decision.</li><li>(used with object) to furnish with or attach by a hinge or hinges.</li><li>to attach as if by a hinge.</li><li>to make or consider as dependent upon; predicate: He hinged his action on future sales.</li></ul>