opening book

noun

A book describing chess openings or giving general opening advice.

Meanings

nounopening book (plural opening books)

plural opening books

  1. literallyboard gamesA book describing chess openings or giving general opening advice.
  2. chess enginesA database of openings given to a chess engine to play, either to improve the strength of the engine, to make the engine more interesting to play against, or to create a diversity of games in a chess engine tournament.
Cite this entry
APA

opening book. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/opening%20book

MLA

“opening book.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/opening%20book. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “opening book,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/opening%20book.

Source: opening book on Wiktionary, CC BY-SA 4.0.