Etymology

fianchetto

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Today it means: The development of a bishop by moving it one square to a long diagonal; specifically, a set of opening moves where a bishop is developed to the second rank of the adjacent knight file. Full definition →

Italian fianchetto
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The story

  1. Italian · borrowed fromfianchetto
  2. English todayfianchetto

From Italian fianchetto, diminutive of fianco (“flank”).

Etymology from Wiktionary, CC BY-SA 4.0.