- a fine, hard needle for engraving lines on a copper plate without using acid
- a picture printed from such a plate
- this way of engraving
- 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.
- An engraving or print made using this technique.