Crosshatch is a term used to describe a pattern of lines that cross each other, creating a series of small boxes or diamonds. It is commonly used in shading, drawing, and embroidery. The term 'shade with multiple crossing lines' can be used to describe the process of crosshatching. Crosshatching is a technique used to create a range of tones and textures in a drawing or painting, by using multiple layers of parallel lines that cross each other. This technique is often used to create a sense of depth and texture in a drawing or painting.