Go over the street to make an appointment (5)
I believe the answer is:
tryst
'an appointment' is the definition.
(tryst is a kind of appointment)
'go over the street' is the wordplay.
'go' becomes 'try' (I've seen this before).
'over' means one lot of letters go next to another.
'the street' becomes 'st'.
'try'+'st'='TRYST'
'to make' is the link.
(Other definitions for tryst that I've seen before include "Romantic meeting" , "Date" , "where lovers meet" , "Secret rendezvous between lovers" , "Rendezvous - assignation" .)