zip-wirehttp://www.oed.com/dictionary/zip-wire_n%3Ftab%3Dmeaning_and_usezip wire, n.
First published 2011

zip wirenoun

Now chiefly British.
  1. 1971–
    An inclined cable or rope stretched between two points down which people slide by means of a suspended pulley, harness, or handle, often as a recreational activity; = zip line n.
    1. 1971
      There's a 400-foot ‘zip wire’ to glide along.
      Edwardsville (Illinois) Intelligencer 5 June 2/5
    2. 1992
      The zip wire is a double climbing rope fitted with twin pulleys.
      Guardian (Nexis) 23 April
    3. 2004
      Zip wires..require you to take a leap of faith in order to go with gravity along an aerial cable slide.
      J. Marais & L. De Speville, Adventure Racing v. 66/2

Originally published as part of the entry for zip, int. & n.¹

zip wire, n. was first published in 2011.