undercutter

nounB2

Định nghĩa theo từ loại

Danh từ

noun

Plural noun:

undercutters

1.
One who, or that which, undercuts.
2.
A type of plough with a V-shaped blade or sweep pulled along under the soil.
3.
(engineering) A type of bit.
4.
A device for excavation, used on railways.
5.
(mining) A device for cutting into rock walls from below.

Nguồn gốc từ

From undercut + -er.