Board of inquiry? (5)
I believe the answer is:
ouija
'board of inquiry?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ouija that I've seen before include "(Seance) lettered board" , "Type of board used in seances" , "Occult board" , "This board is used in spiritualism" , "Board able to answer questions?" .)