call sign

American  

noun

1. call letters.

---

call sign British  

noun

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

---

Etymology

Origin of call sign

First recorded in 1915–20

Example Sentences

“And you will know my call sign is Sandy 1, when I lay my vengeance upon thee.”

From Los Angeles Times • Apr. 16, 2026

“It came at a critical moment,” said a soldier who goes by the call sign Konosh, from the Timur Special Forces Unit in Ukraine’s military intelligence directorate.

From The Wall Street Journal • Mar. 21, 2026

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

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

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

From "Eleven" by Tom Rogers