Hanging
Old English hangian (intransitive verb), of West Germanic origin, related to Dutch and German hangen, reinforced by the Old Norse transitive verb hanga .
wiktionary
See the etymology of the corresponding lemma form.
From Middle English hangynge, honginge, equivalent to hang + -ing. Compare Old English hengen(“hanging”) and hōhing(“hanging”).
etymonline
hanging (n.)
c. 1300, "act of putting to death on the gallows," verbal noun from hang (v.). Meaning "piece of drapery on the wall of a room" is late 15c. Hangings "curtains, tapestry" is from 1640s.
hanging (adj.)
late 12c., present-participle adjective from hang (v.). Hanging gardens (of Babylon), one of the wonders of the world, is Latin pensiles horti, Greek kremastoi kepoi. Hanging judge first recorded 1848.