<p><strong>Adjective</strong></p><ul><li>having sunk or been sunk beneath the surface; submerged.</li><li>having settled to a lower level, as walls.</li><li>situated or lying on a lower level: a sunken living room.</li><li>hollow; depressed: sunken cheeks.</li></ul><p><strong>Verb</strong></p><ul><li>Obsolete. a past participle of sink.</li></ul>