a hiding place; usually a remote place used by outlaws
source: WordNet 3.0
a unit of 8 to 10 cub scouts
source: WordNet 3.0
a room that is comfortable and secluded
source: WordNet 3.0
A small cavern or hollow place in the side of a hill, or among rocks; esp., a cave used by a wild beast for shelter or concealment; as, a lion's den; a den of robbers.