<p><strong>Noun</strong></p><ul><li>a room or a group of related rooms, among similar sets in one building, designed for use as a dwelling.</li><li>a building containing or made up of such rooms.</li><li>any separated room or group of rooms in a house or other dwelling: We heard cries from an apartment at the back of the house.</li><li>apartments, British: a set of rooms used as a dwelling by one person or one family.</li></ul>