1. The nest of a bird of prey, such as an eagle or hawk, built high on a cliff or in a tall tree.
Usage: Also spelled 'aerie' or 'aery'; Commonly used in ornithology and wildlife contexts
2. A high, remote, or fortified dwelling place; a stronghold.
Usage: Figurative or literary use

Examples

• The golden eagle built its eyrie on the steep mountain cliff.
• From her eyrie high above the city, she could see for miles in every direction.
• The hawk's eyrie contained three eggs ready to hatch.
• The villain's secret eyrie was hidden deep in the mountains.
• Biologists monitored the eagle's eyrie to track the population.
• The castle served as the king's eyrie, overlooking the entire kingdom.