diamond reamer

diamond reamer

[′dī·mənd ‚rēm·ər]
(design engineering)
A diamond-inset pipe behind, and larger than, the drill bit and core barrel that is used for enlarging boreholes.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
They have researched polycrystalline diamond reamers and gunreamers with cubic boron nitride (BZN) inlays.