undercutter
构词拆分
undercut词根/词干
+
-er后缀
(added to verbs) A person or thing that does an action indicated by the root verb; used to form an agent noun. · (added to verbs, informal) A person or thing to which the root verb is done or can be done satisfactorily.
词源说明
释义（英文）
名词 Noun
- One who, or that which, undercuts.
- A type of plough with a V-shaped blade or sweep pulled along under the soil.
- (engineering) A type of bit.
- A device for excavation, used on railways.
- (mining) A device for cutting into rock walls from below.