Get a new entrance (4)
I believe the answer is:
gate
'entrance' is the definition.
(type of entrance)
'get a new' is the wordplay.
'new' indicates anagramming the letters.
'get'+'a'='geta'
'geta' anagrammed gives 'GATE'.
(Other definitions for gate that I've seen before include "Attendance figure" , "Means of entry" , "Entry to arena" , "Confine to college" , "Hinged barrier in an entrance" .)