Pitfall (4)
There are a few possibilities for this:
booby trap
'pitfall' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for trap that I've seen before include "Device to catch prey" , "The Web" , "Snare - mouth" , "Part of a snare" , "Snare, ruse" .)
'pitfall' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for snag that I've seen before include "Hidden drawback; tear" , "Jag" , "Hitch, obstacle" , "Difficulty; catch" , "Hidden obstacle or catch" .)
'pitfall' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for booby trap that I've seen before include "hidden bomb, perhaps" , "hidden hazard" , "Unexpected explosive device" , "Hidden weapon" , "Hazard for the unwary" .)