scorper

from The Century Dictionary.

• noun In woodwork and metalwork, a form of gouging-chisel for working in hollows, as in forming bowls and in undercutting carvings, etc.
• noun A pointed, flat, or rounded steel tool with a sharp edge, set in a wooden or other handle, used by the jeweler for drilling holes and cutting away parts of the metal-work around settings to hold precious stones.

from the GNU version of the Collaborative International Dictionary of English.

• noun Same as scauper.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Alternative form of scauper.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a graver used to scoop out broad areas when engraving wood or metal