lie in ambush

• wait in ambush

lie in ambush (third-person singular simple present lies in ambush, present participle lying in ambush, simple past lay in ambush, past participle lain in ambush)}

1. to be hidden waiting to ambush or attack someone

• lie in wait

• “lie in ambush”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.