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light pipe

noun

, Optics.
  1. an elongated transparent medium, such as an optical fiber, for transmitting light.


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Word History and Origins

Origin of light pipe1

First recorded in 1945–50
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Example Sentences

These include its newly redesigned thumb buttons, PCBs, and what Bolt calls its “impressive light pipe design.”

An occasional box of good Egyptian cigarettes or a nice light pipe, or one or two khaki handkerchiefs or a toothbrush would be most acceptable.

From BBC

They have succeeded with the aid of the laparoscope, a tube containing a "light pipe," less than half an inch in diameter.

This familiar principle causes the rod to act as a "light pipe."

The charm of the phrase lies precisely in this subtle but important ambiguity. :light pipe: /n./

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