Aldis lamp

/ ˈɔːldɪs /

noun

1. a portable lamp used to transmit Morse code

Word History and Origins

Origin of Aldis lamp¹

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

Example Sentences

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