Sly son, big and single (8)

I believe the answer is:

stallone

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'sly son big and single' is the definition.
I can't judge whether this defines the answer.

'son big and single' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'big' becomes 'tall'.
'and' means one lot of letters go next to another.
'single' becomes 'one' (a single thing - only one).
's'+'tall'+'one'='STALLONE'

Can you help me to learn more?

(Other definitions for stallone that I've seen before include "Sylvester ........, Hollywood tough guy" , "Hollywood actor" , "Sylvester - (Rambo)" , "See 6" , "Sylvester -, US actor" .)

I've seen this clue in The Guardian.

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