The color red is a primary hue found at the end of the spectrum. You might turn red with embarrassment. It also represents financial loss, as in the term "red ink."

The word red goes back to before 900, and we can see its roots in the Old English rēad. The idea of red as a signal to stop came in 1849. The color has been associated with rebellion as far back as the 13th Century, and in 1917, the Russian Bolsheviks adopted the color as their symbol. When the movement became the political party of Communism, the members became known as "Reds."

Definitions of red
  1. noun
    red color or pigment; the chromatic color resembling the hue of blood
    synonyms: redness
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    a blood-red color
    chrome red
    a red pigment used in paints; basic lead chromate
    Turkey red, alizarine red
    a bright orange-red color produced in cotton cloth with alizarine dye
    cardinal, carmine
    a variable color averaging a vivid red
    crimson, deep red, ruby
    a deep and vivid red color
    dark red
    a red color that reflects little light
    purplish red, purplish-red
    a red with a tinge of purple
    cerise, cherry, cherry red
    a red the color of ripe cherries
    orange red, scarlet, vermilion, vermillion
    a variable color that is vivid red but sometimes with an orange tinge
    a dark purplish-red to blackish-red color
    a dark purplish-red color
    oxblood red
    a dark brownish-red color
    wine, wine-colored, wine-coloured
    a red as dark as red wine
    a primary subtractive color for light; a dark purple-red color; the dye for magenta was discovered in 1859, the year of the battle of Magenta
    fuchsia, fuschia
    a dark purplish-red color
    a dark purplish-red to dark brownish-red color
    type of:
    chromatic color, chromatic colour, spectral color, spectral colour
    a color that has hue
  2. adjective
    of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies
    synonyms: blood-red, carmine, cerise, cherry, cherry-red, crimson, reddish, ruby, ruby-red, ruddy, scarlet
    being or having or characterized by hue
  3. adjective
    (especially of the face) reddened or suffused with or as if with blood from emotion or exertion
    “turned red from exertion”
    red-faced and violent”
    synonyms: crimson, flushed, red-faced, reddened
    colored, colorful, coloured
    having color or a certain color; sometimes used in combination
  4. adjective
    characterized by violence or bloodshed
    “"convulsed with red rage"- Hudson Strode”
    synonyms: crimson, violent
    having or covered with or accompanied by blood
  5. noun
    emotionally charged terms used to refer to extreme radicals or revolutionaries
    synonyms: Bolshevik, Marxist, bolshie, bolshy
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    type of:
    a person who has radical ideas or opinions
  6. noun
    the amount by which the cost of a business exceeds its revenue
    “the company operated in the red last year”
    synonyms: loss, red ink
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    the amount by which the revenue of a business exceeds its cost of operating
    paper loss
    an unrealized loss on an investment calculated by subtracting the current market price from the investor's cost
    a situation in which increased costs cannot be passed on to the customer
    type of:
    amount, amount of money, sum, sum of money
    a quantity of money
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