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Webster 1913 Edition

Noun.

Traveling, or working a way, through bushes; pulling by the bushes, as in hauling a boat along the bushy margin of a stream.

[U.S.]

T. Flint.

The crimes or warfare of bushwhackers.

[U.S.]

bushwhacking ‎(plural bushwhackings)

travelling through thick wooded country, cutting away scrub to make progress
fighting, as a guerilla, especially in wooded country
criticizing, by someone or a person(s), on policies and stances by George W. Bush, in forums and discussions

bushwhacking