fianchetto/fɪənˈt͡ʃɛtəʊ/EtymologyFrom Italian fianchetto, diminutive of fianco (“flank”).nounThe 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.“I’m not a hero, I’m not even a chessboard knight. Trying to be a priest was something of a fianchetto wasn’t it? Clever move by a poor player.”verbTo play a fianchetto.