Part of speech: noun

A powerful electric arc light set in a reflector, so that the rays may be thrown in any direction for search or signaling.

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Usage examples "searchlight":

  1. In a pinch, you know, we can use our searchlight. - "Around the World in Ten Days", Chelsea Curtis Fraser.
  2. The bridge answered the hail as the searchlight pointed forward again. - "The Indian Drum", William MacHarg Edwin Balmer.
  3. After a while they passed below the range of daylight, and then they turned on the searchlight. - "The Second Deluge", Garrett P. Serviss.