Definitions

1. noun

A chess opening in which a bishop is developed to a square on the opposite side of the board from its starting position, especially to g4, c4, or b5, where it can influence the center and attack Black’s position.

“The chess player employed a fianchetto to outmaneuver his opponent.”

2. noun

A type of mitered joint in carpentry, where the ends of two pieces are cut at an angle to fit together.

“The carpenter used a fianchetto joint to reinforce the beam.”