be on (one's) last legs(redirected from be on her last legs)
be on (one's) last legs
To be near physical collapse or death, as due to exhaustion or disease. 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.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.