<p><strong>Noun</strong></p><ul><li>the back of something, as distinguished from the front: The porch is at the rear of the house.</li><li>the space or position behind something: The bus driver asked the passengers to move to the rear.</li><li>the buttocks; rump.</li><li>the hindmost portion of an army, fleet, etc.</li></ul><p><strong>Adjective</strong></p><ul><li>pertaining to or situated at the rear of something: the rear door of a bus.</li></ul>