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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
A POLICE officer has been left seriously injured following an axe attack by a man who was "chopping bits off her", according to a member of the public who dragged her to safety.
"He was chopping bits off her," said Mr Ellis, who is a locksmith.
But a bloke dressed in chainmail chopping bits of wood?
"I once worked as a draughtsman for a surveying company in Harrow, Middlesex, and the boss got me chopping bits of wood to make stakes to put in the ground.
I wish surgeons had abandoned slicing into human brains and chopping bits out.