Lie in wait for and ambush (6)
I believe the answer is:
waylay
'lie in wait for and ambush' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for waylay that I've seen before include "Lie in wait for, to talk or rob (6)" , "buttonhole" , "Intercept and detain" , "Accost" , "Lie in wait for, maybe to rob" .)