A searchlight is a powerful lamp that produces an extremely bright, focused beam of light that can be aimed in any direction. Unlike a regular flashlight, a searchlight is much larger and stronger, capable of illuminating objects miles away or lighting up huge areas of the night sky.

During World War II, cities used searchlights to scan the darkness for enemy aircraft, sweeping their beams across the sky like giant fingers of light. Prison guards use searchlights mounted on towers to watch the grounds at night. Ships at sea use searchlights to signal other vessels or search for people in the water during rescues.

The beam from a searchlight is so intense that it can cut through fog, darkness, and distance in ways ordinary lights cannot. You might have seen searchlights at special events, where they create those dramatic columns of light shooting up into the night sky. Movie premieres sometimes use searchlights outside theaters to create excitement and draw attention.

The word also appears in phrases like “in the searchlight” or “under the searchlight,” meaning intense scrutiny or attention, similar to being in the spotlight. When a politician's decisions come under the searchlight, people examine them very carefully.