- (used with a singular verb)a nickname of Oliver Cromwell.
- the soldiers serving under Cromwell.
- irons in the fire, too many,
Origin of ironside
Examples from the Web for ironsides
Montfitchet Tower was all that remained of the old castle destroyed by Cromwell's Ironsides.The Reason Why|Elinor Glyn
Cromwell, with his Ironsides, upon the other hand, had broken Langdale's horse and driven them from the field.Friends, though divided|G. A. Henty
And its holders had angered the great leader of the Ironsides by killing one of his most valued officers.Historical Tales, Vol. 4 (of 15)|Charles Morris
Every thing in the "Ironsides" was wet, but the stores of the "Hope" were in perfect order.North-Pole Voyages|Zachariah Atwell Mudge
Think of Cromwell and his Ironsides, before whom Europe trembled.The Whence and the Whither of Man|John Mason Tyler
- the cavalry regiment trained and commanded by Oliver Cromwell
- Cromwell's entire army
name given to a man of great hardihood or bravery, c.1300, first applied to Edmund II, king of England (d.1016), later also to Oliver Cromwell and his troops. Old Ironsides as a nickname of U.S.S. "Constitution" dates from that ship's defeat of H.M.S. "Guerriere" on Aug. 19, 1812, in the War of 1812.