chopping bit

chopping bit

[′chäp·iŋ ‚bit]
(mechanical engineering)
A steel bit with a chisel-shaped cutting edge, attached to a string of drill rods to break up, by impact, boulders, hardpan, and a lost core in a drill hole. Also known as chisel bit.
References in periodicals archive ?
But a bloke dressed in chainmail chopping bits of wood?
I wish surgeons had abandoned slicing into human brains and chopping bits out.
The blood used to be there but they had to change the floor because so many people kept chopping bits out for souvenirs.