Board used in seances (5)
I believe the answer is:
ouija
'board used in seances' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ouija that I've seen before include "This board is used in spiritualist proceedings" , "Board able to answer questions?" , "(Seance) lettered board" , "This board is used by spiritualists and seances" , "This board is used in spiritualistic sessions" .)