Jacob's wife before Rachel (4)
I believe the answer is:
leah
'jacob's wife before rachel' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for leah that I've seen before include "Heal (anag) - girl" , "Rachel's sister" , "She married Jacob" , "Jacobs first wife (Gen.29)" , "First wife of Jacob" .)