- lair, den - the habitation of wild animals
--1 is a kind of habitation
- hideout, hideaway, den - a hiding place; usually a remote place used by outlaws
--2 is a kind of hiding place
- den - a unit of 8 to 10 cub scouts
--3 is a kind of unit, social unit
- den - a room that is comfortable and secluded
--4 is a kind of room
--4 is a part ofdwelling, home, domicile, abode, habitation, dwelling house - den - a room that is comfortable and secluded