<p><strong>Noun:</strong></p><ul><li>the isolating, closing off, or surrounding of a place, as a port, harbor, or city, by hostile ships or troops to prevent entrance or exit</li><li>any obstruction of passage or progress</li><li>interruption or inhibition of a normal physiological signal, as a nerve impulse or a heart muscle–contraction impulse</li></ul><p><strong>Verb:</strong></p><ul><li>to subject to a blockade</li></ul>