The Oxford Thesaurus An A-Z Dictionary of Synonyms - lairn.

1) den, burrow, hole, nest, tunnel, cave, hollow, covert: We cautiously approached the lair of the man-eating tiger. 2) hide-out, hideaway, retreat, hiding-place, refuge, asylum, sanctuary, Colloq hidey-hole or hidy-hole: Oliver will not emerge from his lair before tea-time.