Definitions from Wiktionary ( )

▸ adjective:  Of a red hue.
▸ adjective:  (of hair) Having an orange-brown or orange-blond colour; ginger.
▸ adjective:  (of the skin) With a red hue due to embarrassment or sunburn.
▸ adjective:  (of a dog or its coat) Having a brown color.
▸ adjective:  (card games, of a card) Of the hearts or diamonds suits. Compare black (“of the spades or clubs suits”)
▸ adjective:  (politics, often capitalized) Supportive of, related to, or dominated by a political party or movement represented by the color red:
▸ adjective:  Left-wing parties and movements, chiefly socialist or communist, including the U.K. Labour party and the Social Democratic Party of Germany.
▸ adjective:  (US politics) The U.S. Republican Party.
▸ adjective:  (chiefly derogatory, offensive) Amerind; relating to Amerindians or First Nations
▸ adjective:  (astronomy) Of the lower-frequency region of the (typically visible) part of the electromagnetic spectrum which is relevant in the specific observation.
▸ adjective:  (particle physics) Of a red color charge.
▸ noun:  (countable and uncountable) The colour of the setting sun; the colour which is evoked by the longest visible wavelengths (between about 625–740 nm), and a primary additive colour.
▸ noun:  (countable) A revolutionary socialist or (most commonly) a Communist; (usually capitalized) a Bolshevik, a supporter of the Bolsheviks in the Russian Civil War.
▸ noun:  (countable, snooker) One of the 15 red balls used in snooker, distinguished from the colours.
▸ noun:  (countable and uncountable) Red wine.
▸ noun:  (countable) Any of several varieties of ale which are brewed with red or kilned malt, giving the beer a red colour.
▸ noun:  (countable, informal, Australia) A red kangaroo.
▸ noun:  (countable, informal, UK, birdwatching) A redshank.
▸ noun:  (derogatory, offensive) An American Indian.
▸ noun:  (slang) The drug secobarbital; a capsule of this drug.
▸ noun:  (informal) A red light (a traffic signal)
▸ noun:  (Ireland, UK, beverages, informal) Red lemonade
▸ noun:  (particle physics) One of the three color charges for quarks.
▸ noun:  (US, colloquial, uncountable) Chili con carne (usually in the phrase "bowl of red").
▸ noun:  (informal) The redfish or red drum, Sciaenops ocellatus, a fish with reddish fins and scales.
▸ noun:  (slang, uncountable) Tomato ketchup.
▸ noun:  A Communist.
▸ noun:  A supporter of a sports team who wears red as part of their kit.
▸ noun:  A nickname given to someone who has or had red hair.
▸ adjective:  Communist.
▸ verb:  Alternative spelling of redd [(obsolete) To free from entanglement.]
▸ noun:  Acronym of reverse electrodialysis. [The salinity gradient energy retrieved from the difference in the salt concentration between seawater and river water.]

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