A lamplighter, historically, was an employee of a town who lit street light

Street light

A street light, lamppost, street lamp, light standard, or lamp standard is a raised source of light on the edge of a road or walkway, which is turned on or lit at a certain time every night. Modern lamps may also have light-sensitive photocells to turn them on at dusk, off at dawn, or activate...

s, generally by means of a wick on a long pole. At dawn, they would return and extinguish them using a small hook on the same pole. Early street lights were generally candles, oil, and similar consumable liquid or solid lighting sources with wicks. Another lamplighter duty was to carry a ladder and renew the candles, oil, or gas mantles.