dens

/dษ›nz/
noun
  1. 1

    A small cavern or hollow place in the side of a hill, or among rocks; especially, a cave used by a wild animal for shelter or concealment.

    โ€œDaniel was put into the lionsโ€™ den.โ€

  2. 2

    A squalid or wretched place; a haunt.

    โ€œa den of viceโ€

  3. 3

    A comfortable room not used for formal entertaining.

  4. 4

    A narrow glen; a ravine; a dell.

verb
  1. 1

    To ensconce or hide oneself in (or as in) a den.

noun
  1. 1

    The strong odontoid process of the axis.

Source: https://en.wiktionary.org/wiki/den, https://en.wiktionary.org/wiki/dens