red (Noun) — Red colour or pigment; the chromatic colour resembling the hue of blood.
red (Noun) — An emotionally charged term used to refer to extreme radicals or revolutionaries.
red (Noun) — The amount by which the cost of a business exceeds its revenue. ex. "the company operated in the red last year"
red (Noun) — A socialist who advocates communism.
red (Noun) — A tributary of the Mississippi River that flows eastward from Texas along the southern boundary of Oklahoma and through Louisiana.
red (Adjective) — Of a colour at the end of the colour spectrum (next to orange); resembling the colour of blood, cherries, tomatoes or rubies. ex. "The picture would come through dark with a red tinge"
red (Adjective) — Characterized by violence or bloodshed. ex. "convulsed with red rage"
red (Adjective) — (especially of the face) reddened or suffused with or as if with blood from emotion or exertion. ex. "turned red from exertion" ex. "red-faced and violent"
red (Adjective) — Relating to or marked by communism. ex. "red Party"