tub

A tub is a large, open-topped container designed to hold liquids or other materials. In everyday use, tub most often refers to a bathtub, a bathroom fixture for soaking and washing, but the word also denotes a range of portable containers used in kitchens, laundries, laboratories, and industrial settings.

Common bathtub shapes include rectangular, oval, and corner designs. Materials vary widely and may include cast iron with porcelain enamel, steel with enamel, acrylic, fiberglass, ceramic, stone resin, or wood with waterproof coatings. Tubs may be freestanding, alcove-mounted, or under-mounted, and many incorporate features such as integral shelving, built-in seating, jets, or shower attachments.

Typical dimensions of standard bathtubs are about 60 inches long, 30 inches wide, and 14–20 inches deep, with water capacities around 40–60 gallons (150–230 liters). Specialty tubs, such as soaking or oversized models, may be larger. In non-bathing contexts, tubs appear as laundry tubs, utility tubs, or mixing tubs in kitchens and laboratories, often made from stainless steel, heavy plastic, or fiberglass and designed for easy cleaning and drainage.

In industry and commerce, tub-shaped containers are used for storage, transport, or processing of liquids and solids. Their design emphasizes durability, easy handling (often via handles or rims), and compatibility with lids, drains, or agitators.