mezzotint

A manner of engraving on copper or steel by drawing upon a surface previously roughened, and then removing the roughness in places by scraping, burnishing, etc., so as to produce the requisite light and shade. Also, an engraving so produced. To engrave in mezzotint.

Source: Webster's Revised Unabridged Dictionary (1913), United States public domain. See methodology for full licensing detail. Word validity for game play may differ from any official game dictionary.