on your last legs

on (one's) last legs

Near physical collapse or death. I knew I was on my last legs, so I was very relieved to see the marathon's finish line in the distance. Ed's on his last legs—you should probably try to visit him in the hospital today.
See also: last, leg, on
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

on your last legs

1. If you are on your last legs, you are exhausted. Jackson collapsed as he left the boxing ring, clearly on his last legs.
2. If someone is on their last legs, they are about to die. There was an enormous variety of patients — people who looked in perfect health and people who looked as if they were on their last legs.
See also: last, leg, on
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

on your last legs

near the end of life, usefulness, or strength.
1987 Eric Newby Round Ireland in Low Gear It is certainly difficult to imagine how anyone who is in any way infirm, and some of the pilgrims who make the climb are literally on their last legs, can reach the top.
See also: last, leg, on
Farlex Partner Idioms Dictionary © Farlex 2017

on your/its ˌlast ˈlegs

about to die or stop functioning very soon; be very weak or in bad condition: This photocopier is on its last legs.
See also: last, leg, on
Farlex Partner Idioms Dictionary © Farlex 2017
See also: