Lengthwise

Cut 1/3 off each potato lengthwise. Scoop flesh from each potato to within about 1/8 inch of the skins. Transfer flesh to a bowl.

Tom sawed two pieces off the trunk of a fallen birch, splitting them twice lengthwise with his axe.

He sliced the hot dog in half lengthwise.

A lengthwise cut is difficult to saw with hand tools.

Cutting a string bean lengthwise is hard because they are so narrow.