WordNet (r) 3.0 (2006):

floodlight
    n 1: light that is a source of artificial illumination having a
         broad beam; used in photography [syn: flood,
         floodlight, flood lamp, photoflood]
    v 1: illuminate with floodlights

Moby Thesaurus II by Grady Ward, 1.0:

37 Moby Thesaurus words for "floodlight":
   arc, arc light, beacon, brighten, brighten up, color filter,
   dimmer, enlighten, floats, flood, flood with light, footlights,
   foots, gelatin, highlight, illume, illuminate, illumine, irradiate,
   klieg light, light, light plot, light up, lighten, lights,
   limelight, luminate, marquee, medium, overshine, relume, relumine,
   shed light upon, shine upon, spot, spotlight, throw light upon