A clay-like material, containing ferric oxide, used as a pigment.

(figuratively) A cue, warning, or alert; a sign or signal that something is wrong. / (idiomatic, US) red rag

Used other than figuratively or idiomatically: see red, mist. / (idiomatic) uncontrollable rage, anger sufficient to stop clear thinking.

(astronomy) A very large, red star, such as Betelgeuse and Antares.

A long, narrow sea between Africa and the Arabian peninsula; links the Suez Canal with the Arabian Sea.

A great quantity of blood. / (slang, vulgar, in particular) (A quantity of) blood discharged through the vagina during menstruation. / (more generally) A great quantity of reddish liquid, such as wine.

Alternative form of redcap (“goblin or imp”) / Alternative form of redcap (“breed of poultry”)

A deciduous shrub, Ribes rubrum, native to western Europe; any of certain cultivars of the shrub. / The bright red translucent edible berry of this plant.

A warning light, especially as a traffic signal indicating stop. / A sign of a brothel. / (idiomatic) Denial to proceed; a ruling out of any possibility.

(countable, uncountable) A form of cabbage having red leaves, Brassica oleracea var. capitata f. rubra . / (uncountable) Food made from the leaves of the plant.