A tank top is a type of sleeveless shirt that is usually made of lightweight material. The term 'tank top' can be broken down into four crossword solutions: TURRET (6 letters), ALGAE (5 letters), gascap (6 letters), and gunturret (9 letters). A TURRET is a small tower on a larger structure, such as a castle or a tank. ALGAE are simple aquatic plants that can range in size from microscopic to large seaweeds. A gascap is a cap that covers the opening of a fuel tank. Finally, a gunturret is a rotating weapon platform found on tanks and other military vehicles.