borough english

from WordNet (r) 3.0 (2006)

borough English
    n 1: a former English custom by which the youngest son inherited
         land to the exclusion of his older brothers

from Bouvier's Law Dictionary, Revised 6th Ed (1856)

BOROUGH ENGLISH, English law. This, as the name imports, relates exclusively 
to the English law. 
     2. It is a custom, in many ancient boroughs, by which the youngest son 
succeeds to the burgage tenement on the death of the father. 2 Bl. Com. 83. 
     3. In some parts of France, there was a custom by which the youngest 
son was entitled to an advantage over the other children in the estate of 
their father. iller. Rep. mot Mainete.