1) Concealed 2) Lying in ambush 
off-trail travel through brush where no cleared path exists and hikers have to force their way through the branches. Bushwhacking: Making ones way through bushes or undergrowth without the aid of a formal trail.
• (n.) Traveling, or working a way, through bushes; pulling by the bushes, as in hauling a boat along the bushy margin of a stream. • (n.) The crimes or warfare of bushwhackers.
Term for killing a Jarate-covered opponent with the Bushwacka.
Bush'whack`ing noun 1. 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. 2. The crimes or warfare of bushwhackers. [ U.S.]
Making one’s way through bushes or undergrowth without the aid of a formal trail.
[adj] - lying in ambush
adjective lying in ambush; `bushwhacking guerrillas attacking from ambush`