The most common and most likely answer to this crossword clue is the 6 letter word CHEQUE
I've seen this crossword clue in The Guardian
C
H
E
Q
U
E
More clues leading to the result CHEQUE
- In hearing, vet provides settlement, of a sort
- Pick up European form of money
- Type of payment Argentinian put down, dropping two pounds
- How to pay for verification, reportedly
- Charlie for one, say, with 7
- By phone, verify means of payment
- Order to stop speaking
- Form of payment that’s doubled, we hear, for European inspection
- Verify said money order
- Means of settling somewhat niche query
Buddy explains!

The straight part
We know that "Charlie for one, say, with 7" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case charlie for one, say, with 7 = cheque.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 CHEQUE mean?
CHEQUE noun- A draft directing a bank to pay money to a named person or entity.