Wikipedia:

Darkness

Summary:

the percepted state of being dark or the absence of light. The emotional response to an absence of light has inspired metaphor in literature, symbolism in art, and emphasis. A dark object absorbs photons, and therefore appears dim in comparison to ...  (41 of 1061 words, 5 images)

Link:

http://en.wikipedia.org/wiki/Darkness  [cite]

Encarta:

dark | darks [plural] | darker [comparative] | darkest [superlative] | in the dark | whistle in the dark

Summary:

having little or no light | reflecting less light than other colors or shades and therefore appearing deeper, richer, or more somber | not pale or ...  (24 of 301 words, 14 senses, 1 etymology, pronunciation)

Link:

http://encarta.msn.com/dictionary 1861602605/definition.html  [cite]

Random House:

dark | darker [comparative] | darkest [superlative]

Summary:

having very little or no light. | radiating, admitting, or reflecting little light. | approaching black in hue. | not pale or fair; swarthy. | ...  (21 of 244 words, 24 senses, pronunciation)

Link:

http://dictionary.infoplease.com/dark  [cite]

Wiktionary:

dark | darks [plural] | darker [comparative] | darkest [superlative] | dim | gloomy | hidden | secret | sinister | malign | deep | hopeless | negative | pessimistic | after dark | all cats are gray in the dark | at dark | bedarken | before dark | Dark Ages | dark blue | dark brown | dark chocolate | dark comedy | Dark Continent | dark current | dark elves | darken | dark energy | darkey | dark fiber | dark field | dark figure | darkful | dark glasses | dark green | dark horse | dark house | darkie | darkish | dark lantern | darkle | dark matter | dark meat | dark nebula | darkness | dark reaction | dark red | dark room | dark-room | darkroom | dark-skinned | dark side | Wikipedia article | darksome | dark space | dark star | darky | endark | oh dark thirty | pitch-dark | shot in the dark | whistle in the dark | Look at pages starting with dark | Look at pages starting with Dark

Summary:

Having an absolute or (more often) relative lack of light. | [of colour] Dull or deeper in hue; not bright or light. | Hidden, secret | Without moral or spiritual light; sinister, malign. | Conducive to hopelessness; depressing or bleak | Lacking ...  (37 of 221 words, 10 senses, 1 image, 1 etymology, pronunciation)

Link:

http://en.wiktionary.org/wiki/dark  [cite]

Merriam-Webster:

dark | obscure | darkish | darkly | darkness

Summary:

devoid or partially devoid of light; not receiving, reflecting, transmitting, or radiating light | transmitting only a portion of light | wholly or ...  (21 of 214 words, 15 senses, 1 etymology, pronunciation)

Link:

http://www.merriam-webster.com/dictionary/dark  [cite]

Wikipedia:

Dark (disambiguation)

Summary:

commonly refers to darkness, the absence of light. Dark may also refer to: Evil, sinister or malign | Dark (broadcasting), a term used to describe a broadcasting service that has ceased transmission | DARK, a criminal organisation featured in the ...  (38 of 201 words, 15 senses)

Link:

http://en.wikipedia.org/wiki/Dark (disambiguation)  [cite]