I. hinge 1 /hɪndʒ/ BrE AmE noun [countable]
[ Date: 1200-1300 ; Origin: Probably from an unrecorded Old English hencg , from hon ; ↑ hang 1 ]
a piece of metal fastened to a door, lid etc that allows it to swing open and shut
II. hinge 2 BrE AmE verb
[transitive usually passive] to attach something, using a hinge
—hinged :
a hinged lid
hinge on/upon something phrasal verb
if a result hinges on something, it depends on it completely:
His political future hinges on the outcome of this election.
The case against him hinged on Lewis’ evidence.