The most common and most likely answer to this crossword clue is the 5 letter word PIPES
I've seen this crossword clue in Financial Times
P
I
P
E
S
More clues leading to the result PIPES
- Parts of organ Penny put into food
- They may have 10 very good and one being nuisance endlessly
- Measures high voices
- Tubes or fruit seeds full of energy
- Prince surrounded by birds — they sound shrill at 8
- Voices plumber's concerns
- Whistles for tarts carrying pitcher
- Transmits time signal to cover end of programme
Buddy explains!

The straight part
We know that "They may have 10" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case they may have 10 = pipes.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 PIPES mean?
PIPES noun- Meanings relating to a wind instrument.
- Meanings relating to a hollow conduit.
- Meanings relating to a container.
- Meanings relating to something resembling a tube.
- Meanings relating to computing.
- Meanings relating to a smoking implement.
- To play (music) on a pipe instrument, such as a bagpipe or a flute.
- To shout loudly and at high pitch.
- To emit or have a shrill sound like that of a pipe; to whistle.
- Of a metal ingot: to become hollow in the process of solidifying.
- To convey or transport (something) by means of pipes.
- To install or configure with pipes.
- To dab moisture away from.
- To lead or conduct as if by pipes, especially by wired transmission.
- To directly feed (the output of one program) as input to another program, indicated by the pipe character (pipe) at the command line.
- To create or decorate with piping (icing).
- To order or signal by a note pattern on a boatswain's pipe.
- (of a male) To have sexual intercourse with a female.
- To see.
- A single pipe organ.
- One's vocal capacity.
- Biceps.