The line where folded beds show maximum curvature The line formed by the intersection of the hinge plane with the bedding surface
a circumstance upon which subsequent events depend; "his absence is the hinge of our plan"
A hinge is a piece of metal, wood, or plastic that is used to join a door to its frame or to join two things together so that one of them can swing freely. The top swung open on well-oiled hinges. to attach something, using a hinge
a stamp hinge A small piece of paper or glassine used to attach a stamp to an album page
Two jointed plates hinged together and attached to a door and its frame Serves to support or "hang" the door and allows the door to swing or move Hinges are classified according to installation method
= element of secondary structure responsible for flexible behaviour of protein structures Hinges are typically areas of 1, 2 or three residues ; if more residues are involved, the area is usually referred to as a joint (see there)