bushwhacker

Bush"whack`er, n. 1. One accustomed to beat about, or travel through, bushes. [U.S.] They were gallant bushwhackers, and hunters of raccoons by moonlight. W. Irving. 2. A guerrilla; a marauding assassin; one who pretends to be a peaceful citizen, but secretly harasses a hostile force or its sympathizers. [U.S.] Farrow.

---