dry point

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A technique of intaglio engraving in which a hard steel needle is used to incise lines in a metal, usually copper plate, with the rough burr at the sides of the incised lines often retained to produce a velvety black tone in the print.
• noun An engraving or print made using this technique.

from The Century Dictionary.

• noun A steel instrument or etching-needle with a sharp point, used by etchers to cut delicate lines on copperplates from which the etching-ground has been removed.
• noun The process of engraving with the dry-point.
• In engraving, an epithet applied to a line made with the dry-point, or to an engraving produced by means of that instrument.

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

• noun an acid-free etching created by direct incision into a metal or clear acrylic plate with an etching scribe.

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

• noun a print produced by dry point engraving
• noun a steel needle for engraving without acid on a bare copper plate