Tangled up the thread we twisted in coils (8)

I believe the answer is:

wreathed

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'twisted in coils' is the definition.
'wreathed' can be an answer for 'twisted' (wreathing is a kind of twisting). I am not certain of the 'in coils' bit.

'tangled up the thread we' is the wordplay.
'tangled up' is an anagram indicator.
'thread'+'we'='threadwe'
'threadwe' is an anagram of 'WREATHED'.

Can you help me to learn more?

(Other definitions for wreathed that I've seen before include "Festooned (in); curled" , "Covered with garlands" .)

I've seen this clue in The Globe and Mail.

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