light bulb | Wordsmyth Word Explorer Children's Dictionary; WILD dictionary K-2

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light bulb	A light bulb is a glass object that fits into a lamp or similar device and produces light.
light pen	an electronic device that can detect light and dark areas on a computer screen. It is used to select objects on the screen.
light switch	A light switch is something you use to turn a light on or off. It can be part of a lamp that you move to turn the lamp on or off, or it can be a device on a wall that you can use for the same purpose.
light-year	a unit of distance equal to the distance light can travel in one year, about six trillion miles.
make light of	to treat as or consider silly or not important.
traffic light	A traffic light is a light that changes color to tell drivers when to stop or go. When the light is green, the cars can go. When the light is red, the cars have to stop. A traffic light is also called a "traffic signal."

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