Williams in the water (6)
I believe the answer is:
esther
'williams in the water' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for esther that I've seen before include "There's a girl from the Old Testament" , "Section of Bible" , "There's the biblical woman" , "George Moore wrote novel '...... Waters'" , "Holy Book" .)