A US prosecutor, female (3)

I believe the answer is:

ada

'female' is the definition.
(woman's name)

'a us prosecutor' is the wordplay.
'us prosecutor' becomes 'DA' (district attorney).
'a'+'da'='ADA'

(Other definitions for ada that I've seen before include "Computer lang.; f. name" , "Computer language; girl's name" , "Girl's name, one letter short of a man's name" , "- Lovelace, Byron's daughter & computer pioneer" , "Palindromic girl's name" .)

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app