Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having rocks or rock outcroppings; rocky.
  • adj. Firm and unyielding, especially with regard to one's principles, loyalties, or beliefs: a rock-ribbed conservative.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. having rocky cliffs or outcroppings
  • adj. obstinately firm and unyielding in one's opinions

from The Century Dictionary and Cyclopedia

  • Having ribs of rock.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. abounding in or bordered by rocky cliffs or scarps
  • adj. tradition-bound and obstinately opinionated

Etymologies

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