hinging
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.