The most common and most likely answer to this crossword clue is the 6 letter word CHUBBY
I've seen this crossword clue in The Times
C
H
U
B
B
Y
More clues leading to the result CHUBBY
- Podgy head of company introducing partner
- Affectionate mate’s after cold stout
- Fat, cold, old man
- Caught husband with excess flesh
- Fat head of cheating partner
- Plump for Conservative partner
- Buxom partner getting caught on top
- Overweight, married man under a ton
- Partner joining principal in company with a generous corporation
- Round clubs for the old man
Buddy explains!

The straight part
We know that "stout" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case stout = chubby.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 CHUBBY mean?
CHUBBY noun- A chubby, plump person
- An overweight or obese gay man.
- A penile erection, especially when short and with a large circumference; a boner.
- Of a person: slightly overweight, somewhat fat, and hence plump, rounded, and soft.
- Of a body part: containing a moderate amount of fat.