27 across
Beast
of
burden
returned
to
castle
(7)
Beast of burden returned to castle (7)
hints
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checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at castle — that's your definition, the legendary seat of King Arthur. For the wordplay, you've got CAMEL (beast of burden) and then TO "returned", meaning reversed, giving you OT — put them together and there it is.