A party to (4)
'a party to' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for in on that I've seen before include "Aware of - being part of" , "Participating in - knowing about" , "Wise to" , "Aware of secret" , "Privy to" .)
'a party to' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Another definition for inon that I've seen is " Privy to".)