Definition of "ironbound" [i•ron•bound]

• Bound with iron. (adjective)
• Rigid and unyielding: an ironbound moral code. (adjective)
• Bound with rocks and cliffs: ironbound coasts. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "We go swiftly up the path, still glistening with frost, and across the wide stone terrace to the double ironbound doors."
• "Several small, ironbound doors lead off the main part of the warehouse, most likely to secure rooms used for storage."
• "From there, it is only a few yards to the concealed ironbound door hidden amid the fall of ivy."