floodlightPronunciation: /ˈflʌdlʌɪt/Translate floodlight | into French | into German | into Italian | into Spanish Definition of floodlight noun a large, powerful light, typically one of several used to illuminate a sports ground, a stage, or the exterior of a building. [mass noun] the illumination provided by a floodlight:a tennis court where you can play by floodlight verb (past and past participle floodlit) [with object] (usually as adjective floodlit) illuminate (a building or outdoor area) with floodlights:floodlit football pitchesfloodlight in other Oxford dictionaries Definition of floodlight in the US English dictionary