Wiktionary
n. A single-use translucent plastic tube containing isolated substances which when combined are capable of producing light through a chemical reaction-induced chemoluminescence which does not require an electrical power source.
Wikipedia
A glow stick is a self-contained, short-term light-source. It consists of a translucent plastic tube containing isolated substances that, when combined, make light through chemiluminescence, so it does not require an external energy source. The light cannot be turned off, and can be used only once. Glow sticks are often used for recreation, but may also be relied upon for light during military, police, fire, or EMS operations.
Usage examples of "glow stick".
Jaina slapped the glow stick aside, and the foul-smelling stinksalts, as well.
The two chemical liquids inside mixed, and the glow stick began to shine with gold-green light.
In his left hand their apparent leader, Senshi, held a glow stick that cast a misty sphere of light around them.
Portia produced a smaller one, not much more than a glow stick really.
She was feeling her way in the fog rather than following the glow stick.
You can only see my back, and it looks like I'm swinging a glow stick around, and then throwing it at the monster, which can be seen only in shadowy detail as something large and furry.
Looking quickly around, she noticed more, winged sprites with tiny silver hoops piercing the points of their ears, goblins the size of dogs drinking bottled water off the top of the bar, a green-skinned pixie boy with a blue glow stick lighting up the inside of his mouth.