The Collaborative International Dictionary of English v.0.48:

Soc \Soc\ (s[o^]k), n. [AS. s[=o]c the power of holding court,
   sway, domain, properly, the right of investigating or
   seeking; akin to E. sake, seek. Sake, Seek, and cf.
   Sac, and Soke.] [Written also sock, and soke.]
   1. (O. Eng. Law)
      (a) The lord's power or privilege of holding a court in a
          district, as in manor or lordship; jurisdiction of
          causes, and the limits of that jurisdiction.
      (b) Liberty or privilege of tenants excused from customary
          burdens.
          [1913 Webster]

   2. An exclusive privilege formerly claimed by millers of
      grinding all the corn used within the manor or township
      which the mill stands. [Eng.]
      [1913 Webster]

   Soc and sac (O. Eng. Law), the full right of administering
      justice in a manor or lordship.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Soke \Soke\, n.
   1. (Eng. Law) See Soc.
      [1913 Webster]

   2. One of the small territorial divisions into which
      Lincolnshire, England, is divided.
      [1913 Webster]