The most common and most likely answer to this crossword clue is the 1 letter word L
I've seen this crossword clue in The Guardian
L
More clues leading to the result L
- Those new to management of eg estate occupying old riverside
- Note official prohibition for inventor of dance notation
- Record previous evidence of road-user's inexperience?
- L
- 16 OVERPLAY/SUITCASE
- Signs of tuition recently breaking records
- Learner left daughter by waterway
- See 6 Down
- Drug supplied by naughty lad outside work
- Record most recent sign
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.
What does L mean?
L noun- Litre, liter
- Pound (sterling) (from Latin libra)
- Laughing (or laugh) out loud.
- Lots of laughs. (occasionally used)
- (by dilution) Indicates light-heartedness or amusement, or that the accompanying statement is not intended as serious.
- (letter-writing) Lots of love.
- Used in song as a nonsense syllable.