(nautical) Describing the condition in which two sea-going ships travelling in opposite directions pass each other on their port sides, making their red navigation lights face each other.

(archaic) simple past tense and past participle of rede

(countable and uncountable) 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.

Alternative spelling of redd

Having red as its color. / (of hair) Having an orange-brown or orange-blond colour; ginger. / (of the skin) With a red hue due to embarrassment or sunburn.

(idiomatic, accounting) Having net losses; in debt.

Communist

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

A Communist. / A supporter of a sports team who wears red as part of their kit.

Acronym of reverse electrodialysis.