socket pole

Socket \Sock"et\, n. [OE. soket, a dim. through OF. fr. L.
   soccus. See {Sock} a covering for the foot.]
   1. An opening into which anything is fitted; any hollow thing
      or place which receives and holds something else; as, the
      sockets of the teeth.
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            His eyeballs in their hollow sockets sink. --Dryden.
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   2. Especially, the hollow tube or place in which a candle is
      fixed in the candlestick.
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   3. (Electricity) the receptacle of an electric lamp into
      which a light bulb is inserted, containing contacts to
      conduct electricity to the bulb.
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   4. (Electricity) the receptacle fixed in a wall and connected
      by conductive wiring to an electrical supply, containing
      contacts to conduct electricity, and into which the plug
      of an electrical device is inserted; -- called also a
      {wall socket} or {outlet}. The socket will typically have
      two or three contacts; if three, the third is connected to
      a ground for safety.
      [PJC]

            And in the sockets oily bubbles dance. --Dryden.
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   {Socket bolt} (Mach.), a bolt that passes through a thimble
      that is placed between the parts connected by the bolt.

   {Socket chisel}. Same as {Framing chisel}. See under
      {Framing}.

   {Socket pipe}, a pipe with an expansion at one end to receive
      the end of a connecting pipe.

   {Socket pole}, a pole armed with iron fixed on by means of a
      socket, and used to propel boats, etc. [U.S.]

   {Socket wrench}, a wrench consisting of a socket at the end
      of a shank or rod, for turning a nut, bolthead, etc., in a
      narrow or deep recess.
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