The Collaborative International Dictionary of English v.0.48:
Deforest \De*for"est\, v. t. To clear of forests; to disforest. --U. S. Agric. Reports. [1913 Webster]WordNet (r) 3.0 (2006):
deforest v 1: remove the trees from; "The landscape was deforested by the enemy attacks" [syn: deforest, disforest, disafforest]