Answer: cawdor

AnswerCrossword Clue
CAWDOR"Macbeth" castle
CAWDORMacbeth's thanedom before he became king
CAWDORCastle where Macbeth slew Duncan.
CAWDORMacbeth title
CAWDORMacbeth's thanage
CAWDORWhere Macbeth slew Duncan
CAWDORWhere Duncan was done in