She's built like Eve and Ada (3)
I believe the answer is:
ava
'she's' is the definition.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for ava that I've seen before include ". . . Gardner (film star)" , "woman" , "-- Gardner, US actress" , "girl" , "- - Gardner (films)" .)