fianchetto

[ fee-uhn-ket-oh, -chet-oh ]
/ ˌfi ənˈkɛt oʊ, -ˈtʃɛt oʊ /
Chess.

noun, plural fi·an·chet·ti [fee-uhn-ket-ee, -chet-ee]. /ˌfi ənˈkɛt i, -ˈtʃɛt i/.

the development of a bishop, in an opening move, by advancing one or two pawns so as to permit movement along the bishop's diagonal.

verb (used with or without object), fi·an·chet·toed, fi·an·chet·to·ing.

to set up or develop as a fianchetto.

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Origin of fianchetto

From Italian, dating back to 1840–50; see origin at flank, -et
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for fianchetto

fianchetto
/ (ˌfɪənˈtʃɛtəʊ, -ˈkɛtəʊ) chess /

noun plural -tos or -ti (-tiː)

the development of a bishop on the second rank of the neighbouring knight's file or the third rank of the nearer rook's file

verb -toes, -toing or -toed

to develop (a bishop) thus

Word Origin for fianchetto

C19: from Italian diminutive of fianco flank
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012