from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To harden.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Obdurate; hard.
  • transitive v. To harden.

from The Century Dictionary and Cyclopedia

  • To harden; make obdurate.
  • To become hard or hardened.
  • Obdurate; hard; inexorable.


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