The term 'ETCH' is a four-letter word that can be used to describe a sketch or drawing toy. It is a verb that means to carve or engrave a design into a hard surface, usually with acid or a sharp tool. Etching is an artistic technique that has been used for centuries to create intricate designs on metal, stone, and other materials. It is also used in printmaking, where the artist uses a metal plate to create a design that is then transferred onto paper.