Source : Webster's Revised Unabridged Dictionary (1913)

Wood's metal \Wood's" met"al\
   A fusible alloy consisting of one or two parts of cadmium,
   two parts of tin, four of lead, with seven or eight part of
   bismuth. It melts at from 66[deg] to 71[deg] C. See {Fusible
   metal}, under {Fusible}.

Source : WordNet®

Wood's metal
     n : a fusible bismuth-base alloy; melts at about 160 degrees
         Fahrenheit [syn: {Wood's alloy}]