The most common and most likely answer to this crossword clue is the 10 letter word POLYGRAPHS
I've seen this crossword clue in The Daily Telegraph
P
O
L
Y
G
R
A
P
H
S
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 POLYGRAPHS mean?
POLYGRAPHS noun- A device which measures and records several physiological variables such as blood pressure, heart rate, respiration and skin conductivity while a series of questions is being asked to a subject, in an attempt to detect lies.
- A mechanical instrument for multiplying copies of a writing, resembling multiple pantographs.
- A collection of different works, either by one or several authors.
- A group of letters that represent a single phoneme.
- To administer a polygraph test to.