call sign

American  

noun

1. call letters.

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call sign British  

noun

1. a group of letters and numbers identifying a radio transmitting station, esp an amateur radio station Compare call letters

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Etymology

Origin of call sign

First recorded in 1915–20

Example Sentences

The president, played by a breathy, beleaguered Idris Elba and known only by his call sign, “Icon,” is of indeterminate party and ideology.

From Slate • Mar. 13, 2026

They pinpoint the source of the approval to one call sign: Peter 1.

From BBC • Feb. 25, 2026

Peter 1 was the call sign used by Nepal's former police inspector general, Chandra Kuber Khapung, sources have told BBC Eye Investigations.

From BBC • Feb. 25, 2026

"It was my first injury," said Dmitry, who declined to give his last name and goes by the call sign "Barmak".

From Barron's • Feb. 17, 2026

“A-Dawg. It’s my call sign on Screaming Eagles IV.”

From "Eleven" by Tom Rogers