Definitions
1.NounA jointed or flexible device that allows the pivoting of a door etc.
2.NounA naturally occurring joint resembling such hardware in form or action, as in the shell of a bivalve.
3.NounA stamp hinge, a folded and gummed paper rectangle for affixing postage stamps in an album.
4.NounA principle, or a point in time, on which subsequent reasonings or events depend."This argument was the hinge on which the question turned."
5.NounThe median of the upper or lower half of a batch, sample, or probability distribution.
6.NounOne of the four cardinal points, east, west, north, or south.
7.NounA movement that presents itself as rotation when an off-centre fixed point is taken into account.
8.NounIn polyamory, a person connected emotionally or sexually to two others who are not connected to each other.
9.NounTo be in poor health; to be out of sorts.
10.VerbTo attach by, or equip with a hinge.
11.Verb(Should we move, merge or split this sense?) To depend on something.
12.VerbThe breaking off of the distal end of a knapped stone flake whose presumed course across the face of the stone core was truncated prematurely, leaving not a feathered distal end but instead the scar of a nearly perpendicular break."The flake hinged at an inclusion in the core."
13.VerbTo bend.
14.VerbTo move or already be positioned in such a fashion that it presents itself as rotation when an off-centre fixed point is taken into account.