red

nouns

red color or pigment; the chromatic color resembling the hue of blood
emotionally charged terms used to refer to extreme radicals or revolutionaries
the amount by which the cost of a business exceeds its revenue
"the company operated at a loss last year"; "the company operated in the red last year"

adjectives

of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies
is derived from
characterized by violence or bloodshed
"writes of crimson deeds and barbaric days"- Andrea Parke; "fann'd by Conquest's crimson wing"- Thomas Gray; "convulsed with red rage"- Hudson Strode
(especially of the face) reddened or suffused with or as if with blood from emotion or exertion
"crimson with fury"; "turned red from exertion"; "with puffy reddened eyes"; "red-faced and violent"; "flushed (or crimson) with embarrassment"
is derived from