ambush
     n : the act of concealing yourself and lying in wait to attack
         by surprise [syn: {ambuscade}, {lying in wait}, {trap}]
     v 1: wait in hiding to attack [syn: {scupper}, {bushwhack}, {waylay},
           {lurk}, {ambuscade}, {lie in wait}]
     2: hunt (quarry) by stalking and ambushing [syn: {still-hunt}]
Source: WordNet® 2.0