The most common and most likely answer to this crossword clue is the 4 letter word SMEE
I've seen this crossword clue in The Daily Telegraph
S
M
E
E
More clues leading to the result SMEE
- Duck appears from the east without its head
- Duck unusual sexual practices, extreme?
- Duck out of business meeting
- Pirate sells me empty boxes
- Hook’s bo’sun regularly simpered
- Duck! It’s Captain Hook’s bosun!
- Pirate has me enthralled to some extent
- Duck soup made every evening for starters
- Small mostly submissive Barrie character
Buddy explains!

The straight part
We know that "Barrie character" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case barrie character = smee.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.