A Hinge
- A jointed or flexible device that allows the pivoting of a door etc.

Hinge - Wikipedia
- A naturally occurring joint resembling such hardware in form or action, as in the shell of a bivalve.
- A stamp hinge, a folded and gummed paper rectangle for affixing postage stamps in an album.
- A principle, or a point in time, on which subsequent reasonings or events depend.
- (statistics) The median of the upper or lower half of a batch, sample, or probability distribution.
- One of the four cardinal points, east, west, north, or south.
Synonyms
- (device upon which a door hangs): har
- (statistics): quartile
Meronyms
- (device upon which a door hangs): pintel