One who gives way in the entrance (5)
I believe the answer is:
donor
'one who gives' is the definition.
(I've seen this before)
'way in the entrance' is the wordplay.
'way' becomes 'n' (Compass direction - North).
'in the' indicates putting letters inside.
'entrance' becomes 'door' (door is a kind of entrance).
'n' inserted into 'door' is 'DONOR'.
(Other definitions for donor that I've seen before include "Philanthropist" , "patron" , "A giver, often of blood" , "contributor" , "One giving to a cause" .)