plural of dark space

(uncountable) Satan; the Devil. / (by extension, countable) A particularly evil person. / Used other than figuratively or idiomatically: see prince, darkness.

plural of dark meat

(astronomy, astrophysics) A hypothetical form of energy which, it is supposed, is spread uniformly throughout space (and time) and has anti-gravitational properties: it represents a possible mechanism for the cosmological constant, and thus is one of the possible explanations for the current accelerating rate of expansion of the universe; and it is estimated to account for about 74% of the mass-energy of the universe.

(Norse mythology) A member of the race of Dǫkkálfar, creatures who live underground.

Alternative spelling of pitch-dark

Absolutely dark or black; as dark as pitch.

(physics) The temperature-dependent current that flows in a photodetector when no light is shining on it.

An environment that has some of the physiological effects of darkness.

(see usage notes) The period of European history encompassing (roughly) 476–1000 CE. / (Ancient Greece) The Greek Dark Ages (c. 1100–750 BCE). / The dark ages of Cambodia (c. 1450–1863).