The Collaborative International Dictionary of English v.0.48:

Cental \Cen"tal\, n. [L. centum a hundred.]
   A weight of one hundred pounds avoirdupois; -- called in many
   parts of the United States a Hundredweight.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cental \Cen"tal\, n.
   Relating to a hundred.
   [1913 Webster]

   Cental system, the method of buying and selling by the
      cental, or hundredweight.
      [1913 Webster]

WordNet (r) 3.0 (2006):

cental
    n 1: a United States unit of weight equivalent to 100 pounds
         [syn: hundredweight, cwt, short hundredweight,
         centner, cental, quintal]