You could say that the cowardly lion was chicken-hearted .你可以说,这只狮子很胆怯 (chicken-hearted)。
That is another way of describing someone who is not very brave.这是另一种描述某人不是很勇敢的方式。
A chicken is not noted for its bravery. 鸡以胆小著称。
Thus, someone who is chicken-hearted does not have much courage. 因此,胆怯之人并没有多大勇气。
When you are frightened or concerned, your heart is in your mouth . 当你害怕或担心的时候,你会感觉心都提到嗓子眼了( your heart is in your mouth)。