A bikini is a two-piece swimsuit typically worn by women. It is usually made of a stretchy material and consists of a bra top and a bottom that covers the waist and hips. An ATOLL is a ring-shaped coral reef, island, or chain of islands formed by coral growth. An ISLE is a small island. SWIMWEAR is clothing designed to be worn while swimming. A two-piece swimsuit is also known as a tankini, which is a combination of a tank top and a bikini bottom. A one-piece swimsuit is also known as a bathing suit.