Source : Webster's Revised Unabridged Dictionary (1913)

White plague \White plague\
   Tuberculosis, esp. of the lungs.

Source : WordNet®

white plague
     n 1: involving the lungs with progressive wasting of the body
          [syn: {pulmonary tuberculosis}, {consumption}, {phthisis},
           {wasting disease}]
     2: an addiction to a drug (especially a narcotic drug) [syn: {drug
        addiction}]