What does the word lair mean?

Usage examples for lair

  1. " One had black hair; the other's hair was the color of Dyta, the sun, as he seeks his lair for the night. – The Return of Tharn by Howard Carleton Browne
  2. There was every sign of his being treated as the dangerous dog that Blanche, indeed, had heard he was; the outer bars were further protected by wire netting, which stretched like a canopy over the whole cage; but Blanche let herself in with as little hesitation as she proceeded to beard the poor brute in his inner lair. – The Thousandth Woman by Ernest W. Hornung
  3. Meanwhile, Maximus awoke, and sought to raise himself from his lair at the foot of the rock. – Ungava by R.M. Ballantyne