Crossword Genius

One aspect of things actors are deaf to (5)

Ross

I believe the answer is:

aside

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'things actors are deaf to' is the definition.
I can't tell whether this defines the answer.

'one aspect' is the wordplay.
'one' becomes 'a' (a thing is one thing).
'aspect' becomes 'side' (side is a kind of aspect).
'a'+'side'='ASIDE'

'of' is the link.

Can you help me to learn more?

(Other definitions for aside that I've seen before include "In reserve -- confidential remark" , "Line spoken to theatre audience" , "Aides (anag.)" , "Privately, apart" , "Actor's line directed solely to audience" .)

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