The most common and most likely answer to this crossword clue is the 6 letter word SYMBOL
I've seen this crossword clue in Independent
S
Y
M
B
O
L
More clues leading to the result SYMBOL
- Mark, my son, turned to run, losing time
- Badge — one clashing, by the sound of it?
- Token instrument can be heard
- 6 Representation of extremely scruffy, male throwback
- Mark hurls after eating my turnover
- Sound of instrument gives sign
- Logo to signify minicab “optional” when all empty
- Reported sign of musical instrument
- Mostly excited, having time off, receiving book token
- Token lump by my shoulder’s beginning to recede
Buddy explains!

The straight part
We know that "Logo" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case logo = symbol.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 SYMBOL mean?
SYMBOL noun- A character or glyph representing an idea, concept or object.
- A thing considered the embodiment of a concept or object.
- A type of noun whereby the form refers to the same entity independently of the context; a symbol arbitrarily denotes a referent. See also icon and index.
- A summary of a dogmatic statement of faith.
- The numerical expression which defines a plane's position relative to the assumed axes.
- That which is thrown into a common fund; hence, an appointed or accustomed duty.
- Share; allotment.
- An internal identifier used by a debugger to relate parts of the compiled program to the corresponding names in the source code.
- A signalling event on a communications channel; a signal that cannot be further divided into meaningful information.
- To symbolize.