Dictionary definition: decal |?d?kal| noun a design prepared on special paper for transfer onto another surface such as glass, porcelain, or metal. Today decal has become a generic word for any decorative element that can be stuck to something else. The terms "wall stickers", "wall art", "wall tattoos" and "wall decals" are often used interchangeably to describe the same product. Walls That Talk™ decals are a great alternative to traditional stencils or wallpaper. They give you a wide choice of designs, colours and sizes and create a dramatic impact with minimal time investment. Our decals can easily be removed from most surfaces without damaging the surface or leaving residue behind.