<p><strong>Noun</strong></p><ul><li>a building or structure high in proportion to its lateral dimensions, either isolated or forming part of a building.</li><li>such a structure used as or intended for a stronghold, fortress, prison, etc.</li><li>any of various fully enclosed fireproof housings for vertical communications, as staircases, between the stories of a building.</li><li>any structure, contrivance, or object that resembles or suggests a tower.</li><li>a tall, movable structure used in ancient and medieval warfare in storming a fortified place.</li><li>Computers: a tall, vertical case with accessible horizontal drive bays, designed to house a computer system standing on a desk or floor.</li><li>Aviation: control tower.</li></ul>