(third-person singular simple present dens, present participle denning, simple past and past participle denned)
- (reflexive) To ensconce or hide oneself in (as in) a den.
From Middle English den, from Old English denn (“den, lair (of a beast), cave; a swine-pasture, a woodland pasture for swine”), from Proto-Germanic *danjō (“threshing-floor, barn-floor”), from Proto-Indo-European *dʰen- (“flat surface, board, sheet, area, palm of the hand”). Cognate with Scots den (“den, lair”), Dutch denne (“burrow, den, cave, attic”), Dutch den (“ship's deck, threshing-floor, mountain floor”), Middle Low German denne, danne (“threshing-floor, small dale”), German Tenne (“threshing-floor”).
From Old French denier, from Latin denarius.
This is the customary abbreviation of this term as used in case citations. See, e.g., The Bluebook: A Uniform System of Citation, Nineteenth Edition (2010), "Geographical Terms: Foreign countries and regions", Table T10.3, p. 438-443.