noun

• (statistics) The median of the upper or lower half of a batch, sample, or probability distribution.
• (dialectal) To be in poor health; to be out of sorts.

verb

• (transitive) To attach by, or equip with a hinge.
• (intransitive, with on or upon) To depend on something.
  "Games can hinge on the sort of controversial decision made by Taylor in the 10th minute. After Rivière collected Gabriel Obertan’s pass and sashayed beyond Daley Blind he drew the United centre-half into a rash, clumsy challenge but, puzzlingly, Taylor detected no penalty."
• (transitive, archaeology) 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.
  "The flake hinged at an inclusion in the core."
• (obsolete) To bend.
  "Be thou a Flatterer now, and ſeeke to thriue / By that which ha's^([sic – meaning has]) vndone thee; hindge thy knee, / And let his very breath whom thou'lt obſerue / Blow off thy Cap: [...]"