1. vi.（猪等）作呼噜声　(of animals, especially pigs) make a low rough sound from deep in the throat
2. vi.（指人）发出类似的哼声　(of people) make a similar sound expressing pain, boredom, irritation etc. or indicating inattention or distraction
3. vt.咕哝着说　utter sth in a grunting way

　The pigs on the truck are grunting.　卡车上的猪发出呼噜声。
　He grunted as the bullet hit him.　子弹击中他时他疼得哼出声来。
　She grunted some incomprehensible reply.　她咕噜着回答了些令人费解的话。

C （猪等的）呼噜声，（不满等的）嘟哝声，哼哼声low rough sound made by an animal or a person

　give a ～ of approval　发出表示赞成的哼声

　His only answer was a grunt.　他只咕哝了一声算是回答了。

　［派生词］ grunter n.作呼噜声的动物；咕哝的人