Nixie

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Nixie

Slang; mail that is returned to the sender because its address is illegible, nonexistent or otherwise nondeliverable.

References in periodicals archive ?

"There are generations who have never seen a Nixie tube before so they are fascinated by them and think they are cool.

His creations can take anywhere between three weeks and a few months to complete depending on the complexity of the design But his biggest and most painstaking project was a 5ft tall Nixie tube clock robot named Wilson.

Nixie tubes were used in many electronic products such as petrol pumps, military equipment and early electronic desktop calculators.

Amazing Nixie tube clocks

If you have a touch of gray in what is left of your hair, you will remember the old Nixie tubes flashing their bright red numbers on many display panels.