Its a combination of detachable locks (3)

I believe the answer is:

wig

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'of detachable locks' is the definition.
The definition suggests a singular noun which matches the answer.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for wig that I've seen before include "Disguise for baldness" , "False head of hair" , "Artificial hair" , "Artificial head covering, toupee" , "False hairpiece" .)

I've seen this clue in The Irish News.

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