Here are the possible solutions for a light may be set on one clue
Answer
Clue
Relevancy
vivalasvegas
Clue
Elvis standard that begins "Bright light city gonna set my soul / Gonna set my soul on fire"
timer
Clue
A light may be set on one
alarm
Clue
It may be set or set off
Definition
to strike with fear
roller
Clue
One of a set set in hair
date
Clue
One may be set up on one
Definition
to record a statement of time
glorybeam
Clue
"The light" of "I saw the light!"?
laser
Clue
Light in a light show
Light-show light
Definition
a source of high-intensity optical, infrared, or ultraviolet radiation produced as a result of stimulated emission maintained within a solid, liquid, or gaseous medium
