noun:

1. One of the 15 red balls used in snooker, distinguished from the colours.
2. The redfish or red drum, Sciaenops ocellatus, a fish with reddish fins and scales.
3. The drug secobarbital; a capsule of this drug.
4. An Amerind.
5. A Communist.
6. A supporter of a sports team who wears red as part of their kit.
7. Red lemonade.
8. A red light (a traffic signal).
9. A redshank.
10. Chili con carne (usually in the phrase "bowl of red").
11. A revolutionary socialist or (most commonly) a Communist; a Bolshevik, a supporter of the Bolsheviks in the Russian Civil War.
12. Any of a range of colours having the longest wavelengths, 670 nm, of the visible spectrum; a primary additive colour for transmitted light: the colour obtained by subtracting green and blue from white light using magenta and yellow filters; the colour of blood, ripe strawberries, etc.
13. One of the three color charges for quarks.
14. Red wine.
15. Acronym of reverse electrodialysis.

adjective:

1. Of the lower-frequency region of the (typically visible) part of the electromagnetic spectrum which is relevant in the specific observation.
2. The U.S. Republican party.
3. Of the hearts or diamonds suits. Compare black (“of the spades or clubs suits").
4. Having an orange-brown or orange-blond colour; ginger.
5. Communist.
6. (often capitalized) Supportive of, related to, or dominated by a political party or movement represented by the color red:.
7. Amerind; relating to Amerindians or First Nations.
8. Having a color charge of red.
9. Left-wing parties and movements, chiefly socialist or communist, including the U.K. Labour party and the Social Democratic Party of Germany. the red-black grand coalition in Germany.
10. Having red as its color.

verb:

1. Alternative spelling of redd.
2. Simple past tense and past participle of rede.

name:

1. A nickname given to someone who has or had red hair.