A bright colour like blood or fire. Red is at the long wavelength end of the colour spectrum.

Adjective. Used before nouns: 'a red rose', or after verbs: 'the apple is red'. Comparative: redder. Common collocations: red wine, red light, red card (football), red tape (bureaucracy).

Red is one of the most emotionally powerful colours in English-speaking cultures. It signals danger (red light, red alert) but also love (red roses on Valentine's Day). 'Red tape' means unnecessary bureaucracy.