<p><strong>Noun</strong></p><ul><li>a strong person with great power of endurance or resistance</li><li>an epithet or nickname of Edmund II</li><li>usually Ironsides</li><li>a nickname of Oliver Cromwell</li><li>the soldiers serving under Cromwell</li><li>ironsides (usually used with a singular verb)</li><li>an ironclad</li><li>Eastern U.S. scup</li></ul>