English erected sign incorporating extremely refined circles (7)
I believe the answer is:
engirds
'circles' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'english erected sign incorporating extremely refined' is the wordplay.
'english' becomes 'E' (abbreviation).
'erected' shows that the letters should be reversed in order (in a down clue, letters go up).
'incorporating' means one lot of letters goes inside another.
'extremely' means to remove the middle letters (only the extremes of the word are used).
'refined' with its centre removed is 'rd'.
'sign' in reverse letter order is 'ngis'.
'ngis' going around 'rd' is 'ngirds'.
'e'+'ngirds'='ENGIRDS'
Can you help me to learn more?