Variant of den
- the cave or other lair of a wild animal
- a retreat or headquarters, as of thieves; haunt
- a small, squalid room
- a small, cozy room in a house, where a person can be alone to read, work, etc.
- a small, localized unit of Cub Scouts
Origin: Middle English ; from Old English denn, lair, pasture, akin to Middle Low German place where grass is trodden down, lair ; from Indo-European base an unverified form dhen-, level place