The most common and most likely answer to this crossword clue is the 10 letter word FACILITIES
I've seen this crossword clue in The Daily Telegraph
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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.
Crossword Answer definitions
FACILITIES noun- Facilities for urination and defecation: a toilet; a lavatory.
- The fact of being easy, or easily done; absence of difficulty, simplicity.
- Dexterity of speech or action; skill, talent.
- The physical means or contrivances to make something (especially a public service) possible; the required equipment, infrastructure, location etc.
- An institution specially designed for a specific purpose, such as incarceration, military use, or scientific experimentation.
- (in the plural) A toilet.
- A condition of mental weakness less than idiocy, but enough to make a person easily persuaded to do something against their better interest.
- Affability.