hingeyoudaoicibaDictYouDict
hinge: [13] Hinge is generally agreed to be related to the verb hang, and to mean etymologically ‘something on which a door hangs’, but the circumstances of its formation are obscure (as indeed are the reasons for its rhyming with singe, a 16th-century development; before that it rhymed with sing).
=> hang
hinge (n.)youdaoicibaDictYouDict
c. 1300, "the axis of the earth;" late 14c. as "movable joint of a gate or door," not found in Old English, cognate with Middle Dutch henghe "hook, handle," Middle Low German henge "hinge," from Proto-Germanic *hanhan (transitive), *hangen (intransitive), from PIE *konk- "to hang" (see hang (v.)). The notion is the thing from which a door hangs.
hinge (v.)youdaoicibaDictYouDict
c. 1600, "to bend," from hinge (n.). Meaning "turn on, depend" is from 1719. Related: Hinged; hinging.