denned

Verb

den (third-person singular simple present dens, present participle denning, simple past and past participle denned)

1. (reflexive) To ensconce or hide oneself in (or as in) a den.
2. (intransitive) Of an animal, to use as a den; to take up residence in.
   • Although present in virtually all habitats, it preferred to den in caves, so its distribution, especially in cold, northern areas, may have been limited to limestone and other rocky regions where caves form.2018, Tim Flannery, Europe: A Natural History, page 203

See all 9 meanings of den