A sieve is a kitchen tool used to separate solid particles from liquids or to sift dry ingredients. It typically consists of a mesh or perforated surface held in a frame, allowing smaller particles to pass through while retaining larger ones. Commonly made from materials like stainless steel or plastic, sieves are essential for tasks such as draining pasta or sifting flour. In addition to cooking, sieves are also used in various industries, including construction and agriculture. For example, in construction, sieves help separate different sizes of sand or gravel, while in agriculture, they can be used to clean seeds or grains.