The most common and most likely answer to this crossword clue is the 5 letter word FERRY
I've seen this crossword clue in The Guardian
F
E
R
R
Y
Buddy explains!
The straight part
We know that "10" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case 10 = ferry.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 FERRY mean?
FERRY noun- A ship used to transport people, smaller vehicles and goods from one port to another, usually on a regular schedule.
- A place where passengers are transported across water in such a ship.
- The legal right or franchise that entitles a corporate body or an individual to operate such a service.
- To carry; transport; convey.
- To move someone or something from one place to another, usually repeatedly.
- To carry or transport over a contracted body of water, as a river or strait, in a boat or other floating conveyance plying between opposite shores.
- To pass over water in a boat or by ferry.