Crossword Genius

Manufactured snug sock line in silk (5,7)

Ross

I believe the answer is:

king's counsel

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

'silk' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.

'manufactured snug sock line' is the wordplay.
'manufactured' indicates an anagram.
'snug'+'sock'+'line'='snugsockline'
'snugsockline' with letters rearranged gives 'KINGS COUNSEL'.

'in' is the link.

Can you help me to learn more?

I've seen this clue in The Telegraph.
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