call sign

noun

1. call letters.

call sign

noun

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

Word History and Origins

Origin of call sign¹

First recorded in 1915–20

Example Sentences

“For the most part, I was still very much the pilot in command,” the aviator, whose call sign is Vudu, said to the Washington Post.

From Popular-Science

So Specialist BJ with the call sign of "Butter-Cup" sleep on and take your rest.

From The Daily Beast

Co-ordinates were not given and I checked the planetary co-ordinates with the call sign and the Communications List.

From Project Gutenberg