The Collaborative International Dictionary of English v.0.48:

Cavendish \Cav"en*dish\, n.
   Leaf tobacco softened, sweetened, and pressed into plugs or
   cakes.
   [1913 Webster]

   Cut cavendish, the plugs cut into long shreds for smoking.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Cavendish
    n 1: British chemist and physicist who established that water is
         a compound of hydrogen and oxygen and who calculated the
         density of the earth (1731-1810) [syn: Cavendish, Henry
         Cavendish]