Golf hazard (4)
'golf hazard' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for trap that I've seen before include "one would be ill advised to enter?" , "Catch; two-wheeled carriage" , "Light carriage - it's sometimes sprung!" , "Device to catch prey" , "fault" .)
(Other definitions for sand trap that I've seen before include "Golf course obstacle" , "Golf course hazard" , "Bunker" .)