aerie

US /ˈɪr.i/
UK /ˈɪr.i/
"aerie" picture
1.

a large nest of a bird of prey, especially an eagle, typically built high on a cliff or in a tall tree.

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The eagle returned to its aerie with food for its young.
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From the mountain's peak, the climber could see the distant aerie.
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eyrienestrookery
2.

a dwelling or fortress built on a high place.

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The ancient castle served as an impregnable aerie for the king.
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The remote mountain cabin was their private aerie, far from the city noise.
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strongholdfortressrefugehideaway