The word "leash" refers to a strap or cord used to control or restrain an animal, especially a dog, while walking or training. It is typically attached to a collar or harness and helps ensure that the animal stays close to its owner and does not run away. Additionally, "leash" can be used metaphorically to describe a situation where someone or something is under control or restricted in some way.
The word "leash" comes from the Middle English "lesche," which is derived from the Old French "lesche" meaning "a strap for binding or restraining." Its roots can be traced back to the Latin word "ligare," which means "to bind."