hinge
/ˈhɪndʒ/noun
Definitions
A jointed or flexible device that allows the pivoting of a door etc.
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.
Example: This argument was the hinge on which the question turned.
verb
Definitions
To attach by, or equip with a hinge.
(with on or upon) To depend on something.
The 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.
Example: The flake hinged at an inclusion in the core.
To bend.