"Duck!" said Ida (5)
I believe the answer is:
eider
This clue might be a double definition.
'duck' is the first definition.
(eider is a kind of duck)
'said ida' is the second definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
Can you help me to learn more?
(Other definitions for eider that I've seen before include "Duck providing fine down" , "I've noted down" , "Species of duck" , "Reed I turn into a duck" , "Down-producing duck" .)