Ironclad backbone Synonyms

Definitions for Ironclad


  • (adjective) inflexibly entrenched and unchangeable
  • (adjective) sheathed in iron plates for protection
  • (noun) a wooden warship of the 19th century that is plated with iron or steel armor

Definitions for Backbone


  • (noun) a column of bones supporting the trunk of a vertebrate animal
  • (noun) the strength of mind that enables a person to endure pain or hardship
  • (noun) the series of vertebrae forming the axis of the skeleton and protecting the spinal cord