A hanging symbol may disturb one so (5)

I believe the answer is:

noose

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'a hanging symbol' is the definition.
I know that 'hanging' relates to this answer. I also know that both the answer and definition are singular nouns

'disturb one so' is the wordplay.
'disturb' indicates an anagram (I've seen 'disturbed' mean this (the order of letters is disturbed)).
'one'+'so'='oneso'
'oneso' with letters rearranged gives 'NOOSE'.

'may' is the link.

Can you help me to learn more?

(Other definitions for noose that I've seen before include "Loop for catching animals" , "Hanging material" , "Catcher" , "Loop at the end of a rope" , "Circular loop" .)

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

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