Make detached house in middle of county fine (6)

I believe the answer is:

unhook

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'make detached' is the definition.
I can't tell whether this defines the answer.

'house in middle of county fine' is the wordplay.
'house' becomes 'ho' (abbreviation for house).
'in' means one lot of letters goes inside another.
'middle of' indicates the central letters.
'fine' becomes 'ok' (synonyms).
The middle letters of 'county' are 'un'.
'un'+'ok'='unok'
'ho' put into 'unok' is 'UNHOOK'.

Can you help me to learn more?

(Other definitions for unhook that I've seen before include "Unfasten" , "Detach" , "Free" , "Release catch" , "Lift off the sharp bent line" .)

I've seen this clue in The Times.

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