Crossword Genius

A one-man woman (5)

Ross

I believe the answer is:

irene

'woman' is the definition.
(I've seen this before)

'a one-man' is the wordplay.
'a one' becomes 'I' (Roman numeral).
'man' becomes 'rene' ().
'i'+'rene'='IRENE'

(Other definitions for irene that I've seen before include "In Greek mythology, the goddess of peace" , "Girl of peace" , "Girl's name (meaning Peace)" , "- - Handl, actress" , "- - Worth, actress" .)

I've seen this clue in the Evening Standard.
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