Try to find the guard (4,3)
I believe the answer is:
look out
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for look out that I've seen before include "makes one be careful!" , "A view of the future" , "as Wenceslas did" , "Be watchful" , "Be on your guard!" .)