Can mean a number of things, including a song by Madonna (amazingly extensive article in Wiki.)
According to the Merriam-Webster Dictionary
1: delayed or detained for a time
2 : anxiously nervous
3 : having great or excessive interest in or preoccupation with someone or something —usually used with on –
they broke up but he’s still hung up on her
hung up on winning
Then there are the much more prosaic uses of the expression – as in “I hung up on …” when referring to telemarketers. Or – “She hung up her clothes…” said in amazement by a parent.
In the following simple case – it is with joy that after three attempts to find hardware that would work on a 1930s door – and with skill from Noah –

Ironing Board and Iron now off the floor when not. in use