It makes the brother join the fraternity (4)

I believe the answer is:

hood

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'it makes the brother join the fraternity' is the definition.
The definition suggests a singular noun which matches the answer.

This is the entire clue.

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(Other definitions for hood that I've seen before include "Thomas -, Eng. poet" , "Protective cover - violent criminal (slang)" , "Cowl -- violent criminal (slang)" , "Bonnet (US) - gangster (US)" , "Cover < the upper part < of tough" .)

I've seen this clue in The Irish News.

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