Waffle fries are a type of [[french_fries|french fry]] that are lattice-shaped.  They're created by cutting the potato using a mandoline, wave slicer, or similar cutting device featuring a wavy/waffle blade.  After slicing the potato one way, the potato is quarter-turned and sliced again, thus producing the crisscross shape of the fries.

The fast food chain [[Chick-fil-A]] is noted for selling waffle fries.
waffle fries