Lizzy in addition wants fish chucked out (4)
I believe the answer is:
bess
'out' is the definition.
Both the definition and answer are singular nouns.
Perhaps you can see an association between them that I don't see?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for bess that I've seen before include "Our Good Queen" , "Black - was Dick Turpin's horse" , "Queen Elizabeth 1 (sl)" , "Nickname for English queen" , "Elizabeth (dim.)" .)