Awesome couple spoke and spoke! (5)

I believe the answer is:

radii

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'spoke and spoke' is the definition.
I can't judge whether this definition defines the answer.

'awesome couple' is the wordplay.
'awesome' becomes 'rad' (I've seen this in another clue).
'couple' becomes 'II' (Roman numeral for two).
'rad'+'ii'='RADII'

Can you help me to learn more?

(Other definitions for radii that I've seen before include "Halves of diameters" , "Lines between the center and circumference of a circle" , "Centre-circumference lines" , "Lines drawn from a circle's centre" , "lines from a central part" .)

I've seen this clue in The Sun.

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