From Wikipedia (accessed on 21 July 2017) Handwriting: “Handwriting is a writing created by a person with a writing material such as a pen or pencil. Handwriting includes both printing and cursive styles and is separate from formal calligraphy or typeface.”

This definition makes little sense.

My own working definition of handwriting as of today is: representing verbal language by leaving a trace on a surface using single strokes of a tool held by the multi-fingered organ located at the end of the forearm of humans.