The Collaborative International Dictionary of English v.0.48:

Side \Side\, a.
   1. Of or pertaining to a side, or the sides; being on the
      side, or toward the side; lateral.
      [1913 Webster]

            One mighty squadron with a side wind sped. --Dryden.
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   2. Hence, indirect; oblique; collateral; incidental; as, a
      side issue; a side view or remark.
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            The law hath no side respect to their persons.
                                                  --Hooker.
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   3. [AS. s[imac]d. Cf Side, n.] Long; large; extensive.
      [Obs. or Scot.] --Shak.
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            His gown had side sleeves down to mid leg.
                                                  --Laneham.
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   Side action, in breech-loading firearms, a mechanism for
      operating the breech block, which is moved by a lever that
      turns sidewise.

   Side arms, weapons worn at the side, as sword, bayonet,
      pistols, etc.

   Side ax, an ax of which the handle is bent to one side.

   Side-bar rule (Eng. Law.), a rule authorized by the courts
      to be granted by their officers as a matter of course,
      without formal application being made to them in open
      court; -- so called because anciently moved for by the
      attorneys at side bar, that is, informally. --Burril.

   Side box, a box or inclosed seat on the side of a theater.
      [1913 Webster]

            To insure a side-box station at half price.
                                                  --Cowper.
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   Side chain,
      (a) one of two safety chains connecting a tender with a
          locomotive, at the sides.
      (b) (Chem.) a chain of atoms attached to the main
          structure of a large molecule, especially of a
          polymer.

   Side cut, a canal or road branching out from the main one.
      [U.S.]

   Side dish, one of the dishes subordinate to the main
      course.

   Side glance, a glance or brief look to one side.

   Side hook (Carp.), a notched piece of wood for clamping a
      board to something, as a bench.

   Side lever, a working beam of a side-lever engine.

   Side-lever engine, a marine steam engine having a working
      beam of each side of the cylinder, near the bottom of the
      engine, communicating motion to a crank that is above
      them.

   Side pipe (Steam Engine), a steam or exhaust pipe
      connecting the upper and lower steam chests of the
      cylinder of a beam engine.

   Side plane, a plane in which the cutting edge of the iron
      is at the side of the stock.

   Side posts (Carp.), posts in a truss, usually placed in
      pairs, each post set at the same distance from the middle
      of the truss, for supporting the principal rafters,
      hanging the tiebeam, etc.

   Side rod.
      (a) One of the rods which connect the piston-rod crosshead
          with the side levers, in a side-lever engine.
      (b) See Parallel rod, under Parallel.

   Side screw (Firearms), one of the screws by which the lock
      is secured to the side of a firearm stock.

   Side table, a table placed either against the wall or aside
      from the principal table.

   Side tool (Mach.), a cutting tool, used in a lathe or
      planer, having the cutting edge at the side instead of at
      the point.

   Side wind, a wind from one side; hence, an indirect attack,
      or indirect means. --Wright.
      [1913 Webster]

WordNet (r) 3.0 (2006):

side dish
    n 1: a dish that is served with, but is subordinate to, a main
         course [syn: side dish, side order, entremets]