red

The hue of the long-wave end of the visible spectrum, evoked in the human observer by radiant energy with wavelengths of approximately 630 to 750 nanometers; any of a group of colors that may vary in lightness and saturation and whose hue resembles that of blood; one of the additive or light primaries; one of the psychological primary hues.

A pigment or dye having a red hue.

Something that has a red hue.

A Communist.

A revolutionary activist.

The condition of being in debt or operating at a loss.

Having a color resembling that of blood.

Reddish in color or having parts that are reddish in color.