May changes her name (3)

I believe the answer is:

amy

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'name' is the definition.

'may changes her' is the wordplay.
'may' anagrams to 'AMY'.
Though, I'm not clear how this is indicated.

Can you help me to learn more?

(Other definitions for amy that I've seen before include "Girl's name; 3 dn (anag.)" , "so-called little woman" , "-- Winehouse, singer" , "lady" , "-- Johnson, female flyer" .)

I've seen this clue in The Irish Independent.

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