on its last legs

noun

1. one of the parts of the body by means of which animals stand and walk, specif., in human beings,
   1. one of the lower limbs
   2. Anat. the part of either lower limb from the knee to the foot
2. a cut of meat consisting of the leg or its lower part
3. the part of a stocking, slacks, etc. that covers the leg
4. anything that resembles a leg in shape or use; specif.,
   1. a bar or pole used as a support or prop
   2. any of the supports of a piece of furniture
   3. any of the branches of a forked or jointed object
5. the run made by a sailing vessel on one tack
6. any of the stages of a journey or other course
7. Slang a sustained ability to attract audiences: said as of a film
8. Cricket that part of the field which lies to the left and back of the batsman
9. Math. either of the sides of a triangle other than its base or, in a right-angled triangle, its hypotenuse

intransitive verb legged, legging