Callous \Cal"lous\, a. [L. callosus callous hard, fr. callum,
   callus, callous skin: cf. F. calleux.]
   1. Hardened; indurated. "A callous hand." --Goldsmith. "A
      callous ulcer." --Dunglison.
      
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   2. Hardened in mind; insensible; unfeeling; unsusceptible.
      "The callous diplomatist." --Macaulay.
      
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            It is an immense blessing to be perfectly callous to
            ridicule.                             --T. Arnold.

   Syn: Obdurate; hard; hardened; indurated; insensible;
        unfeeling; unsusceptible. See {Obdurate}. --
        {Callous*ly}, adv.
        
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              A callousness and numbness of soul. --Bentley.
        
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