sidelight

As a proper noun indicator

is .

As a noun sidelight is

a light found at the side of something; especially of a vehicle.

is likely misspelled.

has no English definition.

As a noun sidelight

is a light found at the side of something; especially of a vehicle.

As nouns the difference between sidelight and spotlight

is that sidelight is a light found at the side of something; especially of a vehicle while spotlight is a bright, directional light or lamp, especially one used to illuminate the focus or center of attention on a stage.

As a verb spotlight is

to illuminate with a spotlight.