Crossword Genius

Lost art, say, that's been restored (6)

Ross

I believe the answer is:

astray

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

'that's been restored' is the definition.
I can't tell whether this definition defines the answer.

'lost art say' is the wordplay.
'lost' indicates an anagram.
'art'+'say'='artsay'
'artsay' is an anagram of 'ASTRAY'.

Can you help me to learn more?

(Other definitions for astray that I've seen before include "Going wrong" , "Off the correct track" , "A satyr (anag.)" , "Gone off the right path" , "in the wrong place" .)

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