High-flier with interest in school fostered by governess (4)
I believe the answer is:
erne
'high-flier with interest in school' is the definition.
I can't judge whether this defines the answer.
'fostered by governess' is the wordplay.
'fostered by' indicates a hidden word.
'ERNE' can be found hidden inside 'governess'.
Can you help me to learn more?
(Other definitions for erne that I've seen before include "Irish river - sea eagle" , "Sea eagle and Northern loch" , "Light (a flame)" , "Sea bird: lough in Ulster" , "Irish river, loughs; sea bird" .)
