The most common and most likely answer to this crossword clue is the 4 plus 10 letter word PAST PARTICIPLE
I've seen this crossword clue in The Daily Telegraph
P
A
S
T
P
A
R
T
I
C
I
P
L
E
More clues leading to the result PAST PARTICIPLE
- Former role here in Paris starts on picket line, extremely shaken, drunk or stoned
- Old man’s tip: claret is drunk without one drop ultimately getting wasted – or spilt?
- Possessing minimal money, speaker’s spent a tiny bit to get heard perhaps?
- & 14d Wrapping it up in fancy plastic paper is what’ll help make present perfect
- Unconventional part special tip had, say
- It could be eaten or drunk
Buddy explains!

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.