Entrance to house new for one delivering gift? (5)
I believe the answer is:
donor
'one delivering gift?' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'entrance to house new' is the wordplay.
'entrance' becomes 'door' (door is a kind of entrance).
'to house' means one lot of letters goes inside another.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'door' placed around 'n' is 'DONOR'.
'for' is the link.
Can you help me to learn more?
(Other definitions for donor that I've seen before include "One contributing" , "Organ giver?" , "Philanthropist" , "Someone providing" , "Sponsor" .)