Denies point entrances (7)
I believe the answer is:
negates
'denies' is the definition.
(I've seen this before)
'point entrances' is the wordplay.
'point' becomes 'NE' (NE is an example).
'entrances' becomes 'gates' (I've seen this in another clue).
'ne'+'gates'='NEGATES'
(Other definitions for negates that I've seen before include "Denies the truth of" , "Repudiates" , "Nullifies" , "Counteracts" , "Cancels" .)