Definition of hinges:
(n) :
A jointed or flexible device that allows the pivoting of a door etc.
(n) :
A principle, or a point in time, on which subsequent reasonings or events depend.
(v) :
(intransitive, with on or upon) To depend on something.
(n) :
A stamp hinge, a folded and gummed paper rectangle for affixing postage stamps in an album.
(n) :
A naturally occurring joint resembling such hardware in form or action, as in the shell of a bivalve.
(n) :
(statistics) The median of the upper or lower half of a batch, sample, or probability distribution.