Main definitions of Ironside in US English:

: Ironside1Ironside2

Ironside1

noun

historical
  • 1A nickname for Oliver Cromwell.

    1. 1.1 (in the English Civil War) a member of Oliver Cromwell's cavalry; a Puritan soldier.
      • ‘In early 1645 the New Model Army was formed, based largely on the Ironsides, who continued as part of the new army.’
      • ‘Oliver Cromwell's steel-clad Ironsides crushed the Royalist troops of Charles I, the Iron Cross honoured German military valour, the Iron Curtain marked the boundary of cold war national alliances.’
  • 2A 19th-century warship with armour plating; an ironclad.

Pronunciation

Ironside

/aɪ(ə)rnˌsaɪd//ī(ə)rnˌsīd/

Main definitions of Ironside in US English:

: Ironside1Ironside2

Ironside2

noun

  • 1(An epithet of) Edmund II, king of England (reigned 1016).

  • 2Generally (A name for) a person of great physical or mental strength. Also in plural in same sense. Now rare.

  • 3(An epithet of) Oliver Cromwell. Also preceded by old.

  • 4A member of Oliver Cromwell's cavalry; a Puritan soldier. Also in extended use. Now historical.

  • 5Chiefly with lower-case initial. A warship plated with iron; = "ironclad". Now historical.

Origin

Old English; earliest use found in The Anglo-Saxon Chronicle. From iron + side.

Pronunciation

Ironside

/aɪ(ə)rnˌsaɪd//ī(ə)rnˌsīd/