Warning at Caped Crusader's residence earlier (6)

I believe the answer is:

caveat

I'm a little stuck... Click here to teach me more about this clue!

'caped crusader's residence earlier' is the definition.
I can't tell whether this definition defines the answer.

'warning at' is the wordplay.
'warning' becomes 'cave' (I've seen this before).
'cave'+'at'='CAVEAT'

Can you help me to learn more?

(Other definitions for caveat that I've seen before include "A notice or warning" , "'Caution, warning (6)'" , "At cave (anag.)" , "Formal warning" , "Warning (of conditions)" .)

I've seen this clue in The Independent and The Times.

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