名词 undercut:

1. the material removed by a cut made underneath

2. the tender meat of the loin muscle on each side of the vertebral column

3. a notch cut in the trunk of tree in order to determine the direction of its fall

4. (sports) a stroke that puts reverse spin on the ball

5. a cut made underneath to remove material

underprep.低于；在 ... 下；在 ... 内；在 ... 控制下adv.在昏迷中；在 ... 下adj.下面的；从属的；少于的underbushn.树林下的草丛；丛林；下层林丛