Definition of lairs:
(n) :
A place inhabited by a wild animal, often a cave or a hole in the ground.
(n) :
A shed or shelter for domestic animals.
(n) :
(figuratively) A place inhabited by a criminal or criminals, a superhero or a supervillain; a refuge, retreat, haven or hideaway.
(n) :
(Scotland) A grave; a cemetery plot.
(n) :
(seduction community) A group where pickup artists meet to discuss and practise seduction techniques.
(n) :
(Australia, New Zealand, colloquial) A person who dresses in a showy but tasteless manner and behaves in a vulgar and conceited way; a show-off.