a place where a wild animal sleeps or hides 兽穴；兽窝 a place where somebody goes to hide or to be alone （人的）藏身处，躲藏处，独居处 Grandad retreated to his lair in the basement. 爷爷退回到地下室的巢穴。
Word OriginOld English leger ‘resting place, bed’, of Germanic origin; related to Dutch leger ‘bed, camp’ and German Lager ‘storehouse’, also to lie. Compare with laager and lager.