Armor-plated warships

• Something Old
• English general and statesman who led the parliamentary army in the English Civil War and became Lord Protector of the Commonwealth (1599-1658)
• The Virginia and the Monitor, e.g.
• "Old" ship's name
• Cavalry is pressing round flank
• Bygone warship
• Teams following smooth Commonwealth forces
• Old ___ (Boston sight)

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Ironsides \I"ron*sides"\, n. A cuirassier or cuirassiers; also, hardy veteran soldiers; -- applied specifically to Cromwell's cavalry. Old Ironsides . (U. S. Hist.) A nickname for the U.S.S. Constitution, a sailing ship which fought in the American ...