ambuscade ambuscade /ˈæmbəˌskeɪd/

noun

1. () [Archaic] The act of concealing yourself and lying in wait to attack by surprise  ( lying in wait , ambuscade [Archaic] , trap , ambush )
   the act of concealing yourself and lying in wait to attack by surprise
     The soldiers set up an ambush to surprise the enemy.
   The soldiers set up an ambush to surprise the enemy.
   

verb

1. [Archaic] Wait in hiding to attack  ( ambuscade [Archaic] , lurk , scupper [Informal] , ambush , bushwhack [ N. American] , lie in wait , waylay )
   wait in hiding to attack