1.N-COUNT 可数名词 （指人体器官）肝，肝脏 Your liver is a large organ in your body which processes your blood and helps to clean unwanted substances out of it.

2.N-VAR 可变名词 （尤指猪、牛、羊等动物供食用的）肝 Liver is the liver of some animals, especially lambs, pigs, and cows, which is cooked and eaten.