A powerful electric lamp that produces a broad, bright beam of light, often used to illuminate large outdoor areas.
Compound of 'flood' (meaning to fill or cover completely) and 'light'; the 'flood' refers to flooding an area with illumination rather than water, coined in the early 20th century with electric lighting.
The term 'floodlight' is genius wordplay—it means a light so bright it 'floods' an area with illumination, just like water floods terrain, creating a poetic metaphor from basic physics.
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