The term SIGN-MAKING DEVICE can be summarized as a device used to create signs, and the crossword solution for this term is STENCIL, which is a tool used to create a pattern or design on a surface. Stencils are typically made of thin sheets of material such as paper, plastic, or metal, and they are used to transfer a design onto a surface. Stencils are commonly used in sign-making, as they allow for precise and consistent designs to be created quickly and easily.