Hazard making mine drop (7)
I believe the answer is:
pitfall
'hazard' is the definition.
(I've seen this before)
'mine drop' is the wordplay.
'mine' becomes 'pit' (as in a mining pit).
'drop' becomes 'fall' (synonyms).
'pit'+'fall'='PITFALL'
'making' is the link.
(Other definitions for pitfall that I've seen before include "Hidden danger or difficulty" , "Unforeseen difficulty" , "Trap in the form of a concealed hole" , "Unsuspected danger or difficulty - for miner?" , "Hazard" .)