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light pipe

noun, Optics.
an elongated transparent medium, such as an optical fiber, for transmitting light.
Origin of light pipe
1945-50 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for light pipe
Historical Examples
light pipe in Technology
The Free On-line Dictionary of Computing, © Denis Howe 2010
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