Crossword Genius

Old-fashioned routine? (6,5)

Ross

I believe the answer is:

square dance

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'old-fashioned routine?' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe you can see an association between them that I can't see?

'old-fashioned routine?' is the wordplay.
'old fashioned' becomes 'square'.
'routine?' becomes 'dance' (I can't justify this - if you can you should give a lot more credence to this answer).
'square'+'dance'='SQUARE-DANCE'

Can you help me to learn more?

(Other definitions for square dance that I've seen before include "Entertainment for four couples" , "Series of steps with four couples" , "Activity for four couples" , "skipping diversion" , "US country fling with couples in formations(6.5)" .)

I've seen this clue in The Mirror.
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