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.
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.
the cold castle walls were covered with hangings
in those days the hanging of criminals was a public entertainment
there was a small ceremony for the hanging of the portrait