am·bush /ˈæmˌbʊʃ/
 埋伏,伏兵,伏擊(vt.)埋伏,伏擊(vi.)埋伏
 Am·bush n.
 1. A disposition or arrangement of troops for attacking an enemy unexpectedly from a concealed station. Hence: Unseen peril; a device to entrap; a snare.
 Heaven, whose high walls fear no assault or siege
 Or ambush from the deep.   --Milton.
 2. A concealed station, where troops or enemies lie in wait to attack by surprise.
    Bold in close ambush, base in open field.   --Dryden.
 3. The troops posted in a concealed place, for attacking by surprise; liers in wait. [Obs.]
    The ambush arose quickly out of their place.   --Josh. viii. 19.
 To lay an ambush, to post a force in ambush.
 Am·bush v. t. [imp. & p. p. Ambushed p. pr. & vb. n. Ambushing.]
 1. To station in ambush with a view to surprise an enemy.
 By ambushed men behind their temple laid,
 We have the king of Mexico betrayed.   --Dryden.
 2. To attack by ambush; to waylay.
 Am·bush, v. i. To lie in wait, for the purpose of attacking by surprise; to lurk.
    Nor saw the snake that ambushed for his prey.   --Trumbull.
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 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]
 Ambush
    Joshua at the capture of Ai lay in ambush, and so deceived the
    inhabitants that he gained an easy victory (Josh. 8:4-26).
    Shechem was taken in this manner (Judg. 9:30-45. Comp. Jer.
    51:12).