Signifies an attempt to lie in concealment for the purpose of surprising the enemy without his perceiving the intention until he is attacked.
·vt To attack by ambush; to <<Waylay>>. II. Ambush ·vt To station in ambush with a view to surprise...
Webster's Dictionary of the English Language
Joshua at the capture of Ai lay in ambush, and so deceived the inhabitants that he gained an easy vi...
Easton's Bible Dictionary