The most common and most likely answer to this crossword clue is the 5 letter word DONOR
I've seen this crossword clue in The Times
D
O
N
O
R
More clues leading to the result DONOR
- Get into what introduces synonym for benefactor
- Benefactor's name inside entrance
- Foot of salesman where it might be seen? Generous chap!
- Fellow otherwise from whom charity benefits?
- One who’s generous with fellow men
- One gives Spanish gentleman gold
- One who dishes out fast food to audience
- Benefactor giving gold to college fellow
- Duke, working men’s benefactor
- Entrance requires insertion of new sort of 29
Buddy explains!

The straight part
We know that "Benefactor" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case benefactor = donor.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DONOR mean?
DONOR noun- One who makes a donation.
- A group or molecule that donates either a radical, electrons or a moiety in a chemical reaction. Compare acceptor.