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:

Sock \Sock\, n. [F. soc, LL. soccus, perhaps of Celtic origin.]
   A plowshare. --Edin. Encyc.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sock \Sock\, n. [OE. sock, AS. socc, fr. L. soccus a kind of
   low-heeled, light shoe. Cf. Sucket.]
   1. The shoe worn by actors of comedy in ancient Greece and
      Rome, -- used as a symbol of comedy, or of the comic
      drama, as distinguished from tragedy, which is symbolized
      by the buskin.
      [1913 Webster]

            Great Fletcher never treads in buskin here,
            Nor greater Jonson dares in socks appear. --Dryden.
      [1913 Webster]

   2. A knit or woven covering for the foot and lower leg; a
      stocking with a short leg.
      [1913 Webster]

   3. A warm inner sole for a shoe. --Simmonds.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sock \Sock\ (s[o^]k), v. t. [Perh. shortened fr. sockdolager.]
   To hurl, drive, or strike violently; -- often with it as an
   object. [Prov. or Vulgar] --Kipling.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

sock
    n 1: hosiery consisting of a cloth covering for the foot; worn
         inside the shoe; reaches to between the ankle and the knee
    2: a truncated cloth cone mounted on a mast; used (e.g., at
       airports) to show the direction of the wind [syn: windsock,
       wind sock, sock, air sock, air-sleeve, wind sleeve,
       wind cone, drogue]
    v 1: hit hard [syn: sock, bop, whop, whap, bonk,
         bash]