Friend accepts silver, first night, from a very rich guy (7)
I believe the answer is:
magnate
'a very rich guy' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'friend accepts silver first night' is the wordplay.
'friend' becomes 'mate' (mate is a kind of friend).
'accepts' is an insertion indicator.
'silver' becomes 'Ag' (Ag is the chemical symbol for silver).
'first night' becomes 'n' (1st letter of 'night').
'ag'+'n'='agn'
'mate' going around 'agn' is 'MAGNATE'.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for magnate that I've seen before include "Wealthy figure" , "Baron" , "Tycoon" , "Fellow with a lot of money" , "Wealthy or powerful businessman" .)