Meaning of ironside

i•ron•side

Pronunciation: (ī'urn-sīd"), [key]
— n.
  1. a strong person with great power of endurance or resistance.
  2. (cap.) an epithet or nickname of Edmund II of England.
  3. (cap.) Usually,
    1. (used with a sing. v.) a nickname of Oliver Cromwell.
    2. the soldiers serving under Cromwell.
    1. an ironclad.
    2. Eastern U.S.scup.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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