Definition of "unclimb"

unclimb

verb
third-person singular simple present unclimbs, present participle unclimbing, simple past and past participle unclimbed
1. (transitive) To undo the climbing of; to climb down or back from.
  Quotations
  Then I began to unclimb the Rocky Mountains.
  1924, Minnie Hill Wood, Afoot and Alone from Washington, D. C., to San Francisco, page 243
  If you need to be back down on the ground again you have to "unclimb" the tree the same way.
  1984, Field & Stream, volume 89, number 6, page 81