/ Dictionary / Index C callous: Meaning and Definition of Find definitions for: cal•lous Pronunciation: (kal'us), [key] — adj. made hard; hardened. insensitive; indifferent; unsympathetic: They have a callous attitude toward the sufferings of others. having a callus; indurated, as parts of the skin exposed to friction. —v.t., v.i. to make or become hard or callous. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: callous (Thesaurus) Callot call-out Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language