• In
civil engineering, a
switchback is a technique used since antiquity — in places including
Machu Picchu — to build a road or path along steep terrain by zigzagging laterally across a slope. • The trace of a
triangle wave or a
sawtooth wave is a zigzag. •
Pinking shears are designed to cut cloth or paper with a zigzag edge, to lessen fraying. • In sewing, a
zigzag stitch is a
machine stitch in a zigzag pattern. • The zigzag arch is an architectural embellishment used in
Islamic,
Byzantine,
Norman and
Romanesque architecture. • In
seismology, earthquakes recorded in a "zigzag line" form by using
seismograph. == See also ==