Definition of searchlight noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈsɜːtʃlaɪt//
; NAmE NAmE//ˈsɜːrtʃlaɪt//
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a powerful lamp that can be turned in any direction, used, for example, for finding people or vehicles at night Enemy searchlights swept through the sky.
See the Oxford Advanced American Dictionary entry: searchlight