The Collaborative International Dictionary of English v.0.48:

Bockland \Bock"land\, n.
   See Bookland.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bookland \Book"land`\, Bockland \Bock"land`\, n. [AS.
   b[=o]cland; b[=o]c book + land land.] (O. Eng. Law)
   Charter land held by deed under certain rents and free
   services, which differed in nothing from free socage lands.
   This species of tenure has given rise to the modern
   freeholds.
   [1913 Webster]

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

BOCKLAND, Eng. law. The name of an ancient allodial tenure, which was exempt
from feudal services. Bac. Ab. Gavelkind, A Spelman's English Works, vol. 2,
233.