What does the word etching mean?

Usage examples for etching

  1. The flashing, wit, the masterly touches which bring out the characters with all the detail of a fine old copper etching; the marvelous use of realism by this, its first prophet; the sure knowledge of the perspective and background best adapted to each episode; the racy style, so smooth, so elegant, so simple when the educated are speaking, beguile the reader and blind him, at first, to the many discrepancies and incoherences with which the text, as we have it, is marred. – The Satyricon, Complete by Petronius Arbiter
  2. Etching by Rembrandt, shown in original size. – Rembrandt's Etching Technique: An Example by Peter Morse