Yehudi lights

English

An aeroplane with its Yehudi lights on (above) and off (below).

Etymology

Developed, in part, by the US Navy's "Project Yehudi" from 1943 onwards. (This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “But who/what was Yehudi? Is it an eponym?”)

Noun

Yehudi lights pl (plural only)

1. (rare) Lights placed under aeroplanes that raise their brightness to the same level as that of the sky, as a form of camouflage.