Fianchetto

Italian fianchetto — diminutive of fianco, meaning flank, side

Flank development of the bishops via g2-g3 and ♗g2 (for Black, g7-g6 and ♗g7):

Boards can be stepped through with the mouse wheel, a swipe, or the arrow keys — not just the buttons below them. Interactive boards

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or via b2-b3 and ♗b2 (for Black, b7-b6 and ♗b7):

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The fianchetto is widely used in modern openings.

To fianchetto — to develop a bishop to the flank.