ambush

ambush is a Noun

Definition:

[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.