dry point

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. 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.
2. n. An engraving or print made using this technique.

Century Dictionary and Cyclopedia

1. n. 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. The bur raised by the cutting of the metal is either left standing on one side of the furrow to catch the printing-ink and produce a mezzotint effect of more or less deep tone, or removed with the burnisher so that the line may yield a clean impression.
2. n. The process of engraving with the dry-point.
3. In engraving, an epithet applied to a line made with the dry-point, or to an engraving produced by means of that instrument.

Wiktionary

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

GNU Webster's 1913

1. adj. (Fine Arts) The needle with which such an engraving is made.

WordNet 3.0

1. n. a print produced by dry point engraving
2. n. a steel needle for engraving without acid on a bare copper plate