The most common and most likely answer to this crossword clue is the 6 letter word SPLIFF
I've seen this crossword clue in Independent
S
P
L
I
F
F
More clues leading to the result SPLIFF
- Smart clothing left for Mary Jane
- Primarily sold packed lunches in fast food joint
- Second person in court ain't put away for providing cannabis
- Slip out following a cigarette
- Flips out with female joint
- Lecturer housed in smart joint
- Joint Scots and Irish flowers, identically trimmed
- Joint chiefs of staff put life into freedom fighters
- Joint occasionally supple when beginning to flex
- Hearts and Celtic etc provided with strong cigarette?– revised online clue
Buddy explains!

The straight part
We know that "joint" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case joint = spliff.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 SPLIFF mean?
SPLIFF noun- A cannabis cigarette.