Vampire in corner -- cross raised (8)
I believe the answer is:
trapdoor
'vampire' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'corner cross raised' is the wordplay.
'corner' becomes 'trap' (I've seen this before).
'cross' becomes 'rood' (term for a crucifix).
'raised' is a reversal indicator.
'rood' backwards is 'door'.
'trap'+'door'='TRAPDOOR'
'in' is the link.
Can you help me to learn more?
(Other definitions for trapdoor that I've seen before include "Hinged flap" , "Hinged floor opening" , "Its movement can cause sudden drop" , "entrance into loft?" , "Means of access set in floor or ceiling" .)