The Collaborative International Dictionary of English v.0.48:

Switch \Switch\, v. t. [imp. & p. p. Switched; p. pr. & vb. n.
   Switching.]
   1. To strike with a switch or small flexible rod; to whip.
      --Chapman.
      [1913 Webster]

   2. To swing or whisk; as, to switch a cane.
      [1913 Webster]

   3. To trim, as, a hedge. [Prov. Eng.] --Halliwell.
      [1913 Webster]

   4. To turn from one railway track to another; to transfer by
      a switch; -- generally with off, from, etc.; as, to switch
      off a train; to switch a car from one track to another.
      [1913 Webster]

   5. (Eccl.) To shift to another circuit.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Switching \Switch"ing\,
   a. & n. from Switch, v.
   [1913 Webster]

   Switching engine, a locomotive for switching cars from one
      track to another, and making up trains; -- called also
      switch engine. [U.S.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

switching
    n 1: the act of changing one thing or position for another; "his
         switch on abortion cost him the election" [syn: switch,
         switching, shift]

The Free On-line Dictionary of Computing (30 December 2018):

switching

    Establishing the correct path through a network
   for a single packet of data (packet switching) or a
   persistent end-to-end connection (circuit switching).

   (2007-08-16)