Designating the colour of blood, a ruby, a ripe tomato, etc., and appearing in various shades at the longer-wavelength end of the visible…

Of a bright or strong red colour. Also: reddened by fire.

(of) a vivid orange-red shade.

Flame-coloured; red.

Flame-coloured.

Of the colour orange-red.

Of an orange-red shade or colour; rust-coloured.

Of the orange-red colour of pimento.

= pimento, adj.

Also attributive or as adj. (see also flame-red adj. n. at compounds 2a below).