The Collaborative International Dictionary of English v.0.48:

Roving \Rov"ing\, n.
   1. The operatin of forming the rove, or slightly twisted
      sliver or roll of wool or cotton, by means of a machine
      for the purpose, called a roving frame, or roving machine.
      [1913 Webster]

   2. A roll or sliver of wool or cotton drawn out and slightly
      twisted; a rove. See 2d Rove, 2.
      [1913 Webster]

   Roving frame, Roving machine, a machine for drawing and
      twisting roves and twisting roves and winding them on
      bobbin for the spinning machine.
      [1913 Webster]