an artificial light so directed or diffused as to give a comparatively uniform illumination over a rather large given area.
a lamp or projector that produces such a light.

verb (used with object), flood·light·ed or flood·lit, flood·light·ing.

to light up or illuminate with a floodlight.

Origin of floodlight

First recorded in 1920–25; flood + light1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for floodlight

Historical Examples of floodlight

  • A floodlight turned the area in front of the gate into a patch of daylight.

    The Whispering Spheres

    Russell Robert Winterbotham

  • A floodlight in the yard made the whole place as light as day.

    A Yankee Flier in Italy

    Rutherford G. Montgomery

  • The glider had disappeared—all I could see was the floodlight.

  • Two new stars winked into being, on either side of the floodlight.

  • Ivan Fitzgerald, who was carrying the floodlight, swung it slowly around.


    H. Beam Piper

British Dictionary definitions for floodlight



a broad intense beam of artificial light, esp as used in the theatre or to illuminate the exterior of buildings
the lamp or source producing such light

verb -lights, -lighting or -lit

(tr) to illuminate by or as if by a floodlight
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012