The Collaborative International Dictionary of English v.0.48:

Cadastre \Ca*das"tre\, Cadaster \Ca*das"ter\, n. [F. cadastre.]
   (Law.)
   An official statement of the quantity and value of real
   estate for the purpose of apportioning the taxes payable on
   such property; a public register showing the details of
   ownership and value of land.
   [1913 Webster]

WordNet (r) 3.0 (2006):

cadastre
    n 1: a public register showing the details of ownership and
         value of land; made for the purpose of taxation [syn:
         cadaster, cadastre]