DictionarydenInformal room
noun

den

DEN/den/

A private sheltered dwelling or retreat.

He relaxes in the den with a book in his armchair.

A compact home den seen through its open doorway: an older man relaxes in a cushioned armchair with a book, beside a small desk and a low bookcase.
Etymology

Old English denn named an animal’s sheltered hiding place. Applied to human dwellings, it came to mean a private retreat or chamber, then a small room for work or leisure.

In context

Erik Van Conover5:53
the den it's a den it's uh you can use it as a bedroom
Inside a $33,000,000 Futuristic Sky Mansion | NYC Penthouse Tour

More examples

  • We spend quiet evenings reading in our den.
  • The fox carries food back to its den.
  • Police discover a gambling den behind the store.

Forms

den · dens

Similar words

study
A home room primarily for reading or work, not relaxation.
lair
Usually an animal's resting place or a person's secret hideout.
hideout
Emphasizes concealment from others rather than comfort or shelter.