When about fifty, she is unequalled (7)
I believe the answer is:
peeress
'when about fifty' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for peeress that I've seen before include "Female House of Lords member" , "She is married to a duke, earl etc" , "Noblewoman" , "Woman from other place" , "Female noble" .)