The most common and most likely answer to this crossword clue is the 6 letter word REUBEN
I've seen this crossword clue in The Daily Telegraph
R
E
U
B
E
N
More clues leading to the result REUBEN
- Concerning curved pipe, last blown for a biblical patriarch
- Jacob's lad audibly expressed regret, reaching mountain
- Tribe about to go to university on a high in Scotland
- About to take place inside a French one found in the first 6 of the 26
- Painter of plump pulchritude not having finished eating English salt beef sandwich
- Beer UN brewed for old leader of Israel
Buddy explains!
The straight part
We know that "leader of Israel" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case leader of israel = reuben.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.