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 ?
He was chopping bits off her," said Mr Ellis, who is a locksmith.
But a bloke dressed in chainmail chopping bits of wood?
I wish surgeons had abandoned slicing into human brains and chopping bits out.