1leash 
/ˈli:ʃ/ noun
plural leash·es /ˈli:ʃ/ noun [count] chiefly US : a long, thin piece of rope, chain, etc., that is used for holding a dog or other animal
▪ put a dog on a leash ▪ Dogs must be kept on a leash while in the park. ▪ The dog saw a cat and was straining at its leash trying to get at it. — often used figuratively ▪ The coach kept her players on a (short/tight) leash throughout the year. [=the coach closely watched and controlled the behavior of her players] ▪ The kids were straining at the leash to get going. [=were very eager to get going] —called also (chiefly Brit) lead
▪ put a dog on a leash ▪ Dogs must be kept on a leash while in the park. ▪ The dog saw a cat and was straining at its leash trying to get at it. — often used figuratively ▪ The coach kept her players on a (short/tight) leash throughout the year. [=the coach closely watched and controlled the behavior of her players] ▪ The kids were straining at the leash to get going. [=were very eager to get going] —called also (chiefly Brit) lead
