Source : Webster's Revised Unabridged Dictionary (1913)

Babbitt metal \Bab"bitt met`al\ [From the inventor, Isaac
   Babbitt of Massachusetts.]
   A soft white alloy of variable composition (as a nine parts
   of tin to one of copper, or of fifty parts of tin to five of
   antimony and one of copper) used in bearings to diminish
   friction.

Source : WordNet®

Babbitt metal
     n : an alloy of tin with some copper and antimony; an
         anti-friction lining for bearings [syn: {babbitt}]