Oddly envies the first lady (3)
I believe the answer is:
eve
'first lady' is the definition.
(Biblical first woman)
'oddly envies' is the wordplay.
'oddly' indicates alternate letters (letters in odd-numbered positions).
The alternate letters of 'envies' are 'EVE'.
'the' acts as a link.
(Other definitions for eve that I've seen before include "Woman of Eden" , "One from Genesis" , "First mate" , "Woman in a happy place" , "Girl" .)