Abigail is prepared for eavesdroppers (4)
I believe the answer is:
maid
'abigail' is the definition.
(I've seen this in another clue)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for maid that I've seen before include "Serving girl" , "employee" , "Female domestic servant" , "One in service" , "daughter?" .)