Hank to his friends, perhaps (5)
I believe the answer is:
henry
'hank to his friends perhaps' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
This is the entire clue.
Can you help me to learn more?
(Other definitions for henry that I've seen before include "Best Actor Oscar winner 1981, for 'On Golden Pond'" , "Author of The Turn of the Screw" , "Unit of inductance; man's name" , "- the Navigator, Portuguese prince" , "Name of eight English kings" .)