"On last leg" is an idiomatic expression commonly used to describe a person or thing that is nearing the end of its viability or usefulness. This phrase usually implies a state of extreme weariness, decline, or impending failure. When someone or something is on their last leg, it suggests that they are in their final stages, exhausted, or struggling to function properly.
This phrase can be used metaphorically to refer to the physical or emotional condition of a person. For instance, if someone has been working long hours or enduring immense stress, they may be described as being on their last leg, indicating that they are physically or mentally drained. Similarly, this phrase can be used to describe an object or a machine that is barely functioning or about to break down due to excessive use or age.
The origin of this expression comes from the idea that human beings or animals typically have four legs to support themselves. When one leg is no longer able to bear weight or function properly, the creature is left with just three legs to rely on, making it weaker, unsteady, and vulnerable to collapse. Thus, being on one's last leg symbolizes a weakening or deteriorating condition, whether it is physical, emotional, or practical.
Overall, the expression "on last leg" denotes a state of imminent decline, exhaustion, or impending failure, highlighting that something or someone is struggling and may not be able to continue much longer.
