Find sea eagle in another nest (4)
I believe the answer is:
erne
'find sea eagle' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'in another nest' is the wordplay.
'in' says the answer is hidden in the clue.
'ERNE' is hidden within 'another nest'.
Can you help me to learn more?
(Other definitions for erne that I've seen before include "Sea bird: lough in Ulster" , "River and lake of the North" , "White-tailed eagle" , "Lough of the North" , "European sea eagle" .)