Your ass wanders into storage for relics (7)

I believe the answer is:

ossuary

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'storage for relics' is the definition.
I can't tell whether this defines the answer.

'your ass wanders' is the wordplay.
'wanders' indicates an anagram.
'your'+'ass'='yourass'
'yourass' anagrammed gives 'OSSUARY'.

'into' is the link.

Can you help me to learn more?

(Another definition for ossuary that I've seen is " Container or room for the bones of dead people".)

I've seen this clue in The Independent.

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