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Aldis lamp

British  
/ ˈɔːldɪs /

noun

  1. a portable lamp used to transmit Morse code

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of Aldis lamp

C20: originally a trademark, after A. C. W. Aldis, its inventor

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The flashes of light from the Liberator were assumed to be a Morse-code message flashed from an Aldis lamp.

From BBC

In an age of Wi-Fi and Bluetooth, flashing lights might seem like going back to sending messages with an Aldis lamp.

From Economist

An Aldis lamp winked down toward the shadow bar.

From Project Gutenberg